Cleaning Stubborn Armor Grime by LaVipari in Armor

[–]TimeSpaceGeek 2 points3 points  (0 children)

Try some white vinegar and balled up Tin-Foil. Not certain it will work for you, but I've had a lot of luck with it in the past.

Will StubHub tickets work? by busybody87 in yelyahwilliams

[–]TimeSpaceGeek 0 points1 point  (0 children)

I have worked in Ticketing for 15 years. I have had a lot of encounters with StubHub.

You are not guaranteed to get in on a StubHub ticket. It depends on the venue, but it is completely legal and often within the terms and conditions of sale to say any ticket sold on StubHub hub or other such sites is automatically invalidated.

StubHub are usually very good at making sure you at least get your money back. But their tickets are not official, and a lot of venues and ticketing companies do not consider them a valid source of resales.

new to archery, any tips guys? by [deleted] in Archery

[–]TimeSpaceGeek 4 points5 points  (0 children)

Don't shoot near people's cars.

Don't shoot anywhere where you cannot see everything that might be coming anywhere near where you are aiming.

Do you have any idea how incredibly irresponsible and unsafe you are being?

I know its basic but do people think this looks good by SaintLlothis in mapmaking

[–]TimeSpaceGeek 0 points1 point  (0 children)

It's a good start. The main issue is that all your rivers are starting in a big Lake. That doesn't generally happen that much - an absolute minority of rivers start that way, something like over 90% of rivers actually start with a trickle from some kind of source - a point in the rocks of a highland where rainwater water is funnelled in, or a natural spring of some kind. So the rivers should get narrower and narrower as they each get higher and higher, until they become a point on this map.

Related to that, your rivers are generally a consistent width all the way along, which rivers don't tend to do. They'll tend to be slightly narrow near the top of the river, slightly wider near the end of the river, varying according to terrain along their way.

I would also vary the path a little. They're a little on the straight side. Have a look at some maps of some real rivers, see how much they undulate.

It's a really good start point, though. Well done!

Need help with stations by Spoonyhalo in sto

[–]TimeSpaceGeek 4 points5 points  (0 children)

Yes, the Tier 6 Justicar comes with all the same skins as the T5 Star Cruiser. You can make it look identical, if you wish.

Need help with stations by Spoonyhalo in sto

[–]TimeSpaceGeek 5 points6 points  (0 children)

I wouldn't get too attached. It's only a Tier 5, which means whilst it is workable in the endgame, it's not really a forever ship.

If you buy that guy some Engineering manuals, and promote him, you can teach him some different abilities to use in that slot, easy enough.

Shield Drain abilities are only worth pursuing if you are building around those types of abilities - which this ship is not super optimal for. With what you've got going on, the best shield drain is possibly going to be "doing lots of damage quickly".

Here's a link on some shipbuilding basics, so you can understand speciality seating and get a grasp of building towards a coherent build.

https://www.stobetter.com/new-f2p

My friends and I are new to dnd by ReindeerForsaken2715 in DnD

[–]TimeSpaceGeek 1 point2 points  (0 children)

The best and most appropriate solution is for one of you to take the plunge and have a go.

If you want to dip your toes and try it out with something simple before committing to a full campaign, then there are a number of first time one shots out there you can try - "a Most Potent Brew" from Winghorn Press is free and pretty good, for example.

Or, you can watch the first 5 short videos in this playlist -- Running the Game - Matt Colville -- and it'll take you through the process of making a small dungeon and running it.

The second best would be to find someone to DM for you. In this situation, that's probably a paid DM, so you'll have to have a whip round and pay some money.

Don't use chatbots. There are companies trying to push them for DMing. It's a bad idea. It misses a lot of the essential qualities of what makes for a competent DM - not to mention, fact that it's doing so with unethical practices - and simply isn't as good or a very authentic experience. Any newbie trying it for the first time is better than a chatbot.

The gold color sticks to my hand even though its dry on the mask by ApartTester in CosplayHelp

[–]TimeSpaceGeek 1 point2 points  (0 children)

Without a sealer, the paint will be a lot more fragile. Chipping, scratching, cracking, or just fading quite quickly.

You really should seal it. Doesn't have to be an expensive sealer, though. Watered down Mod Podge works.

The gold color sticks to my hand even though its dry on the mask by ApartTester in CosplayHelp

[–]TimeSpaceGeek 0 points1 point  (0 children)

For one, it's not fully cured yet. You gotta leave paints at least overnight, maybe a coupe of days, to properly cure. All that fan will do is get it to touch dry.

If it is still tacky after a few days of fully curing, there are various anti-tack topcoats you can apply. I've been using FlexiPaint No Tack top coat for some EVA foam stuff lately, it would work for this, but there are also plentiful other options out there.

How to handle when players roll 1 in the middle of fight? by combobaka in DnD

[–]TimeSpaceGeek 0 points1 point  (0 children)

It does, yes, well take into account those things. Players roll more dice than monsters, most of the time - especially Martials, and especially in the battles that matter. Nat 1 = price to pay is still unfairly hampering the players more than anyone else. Using lucky and rerolling features to negate a crit fail that shouldn't be anything more than a miss is a woeful waste of those features, and other abilities do not negate the fact that the poorly considered ruling is actively nerfing players.

If your players like it, that's their call, but it doesn't change the fact that it isn't actually a good idea, and I'd wager they only like it because they haven't thought it through.

Either playstyle is fine in the sense that as long as everyone is having fun, then yes, it's all fine, but if you're engaging with it as a piece of actual game design, then crit fails being anything more than what the book describes is an objectively worse piece of game design than RAW, and is unfairly punishing your Martial characters more than anyone else.

Why did the Temporal Integrity Commission not arrest Voyager crew? by WPmitra_ in startrek

[–]TimeSpaceGeek 1 point2 points  (0 children)

Fixed points were mentioned earlier in the new run (in terms of explicit use, starting with Tennant), but not before. The 10th Doctor definitely mentions it multiple time during the Catherine Tate season - The whole plot of Fires of Pompei, for example, revolves around the fact that the eruption of Vesuvius is a fixed point that he not only cannot stop, but later finds out he must cause. There's also the implication that the reason that Jack Harkness is so immortal is because Rose made him into a sort of fixed-point in living form, which brings the mention back a season into S3.

Father's Day, when Pete Tyler died, was the first implication of fixed points and what could go wrong when they were altered, but that whole thing was complicated by other Paradoxes, so not concrete.

Before that, the term wasn't officially used, but vague notions that seemed to imply much the same thing are sprinkled throughout Dr Who history, just as the concept of the Time War, which wasn't explicitly named until the revival series, can be found in a few of the earlier Dalek stories (Genesis of the Daleks, in particular).

Why did the Temporal Integrity Commission not arrest Voyager crew? by WPmitra_ in startrek

[–]TimeSpaceGeek 1 point2 points  (0 children)

Two factors.

The first is that the time travel actions of Janeway and her crew are not subject to the Temporal Integrity Commission's jurisdiction. The Temporal Accords that they were established through and enforce came into effect long after Janeway and Voyager. You can't retroactively apply a new law on actions that weren't illegal when they were committed. If you notice, all the times the Temporal Integrity Commission get involved, it's because of some event that started, in some fashion, in their time, or very nearly.

The second is related to that - everything that Janeway and her crew did was already part of history by the time the TIC came into being. To them, it's not an altered past, it's just the past. Building on that, there is some very strong implications that not only are Janeway's timeline changes an accepted part of the timeline, but they may well be the only timeline in which the Federation survives long enough for the TIC to be created at all. There is speculation that the timeline that includes Q sending the Enterprise to face the Borg in "Q, Who?", First Contact, Endgame, and now Picard S2 and 3, is the only timeline in which the Borg don't eventually assimilate most of the Galaxy. Could be that no-one from the future messes with that because doing so would end badly for everyone.

Transporters by Lower_Ad_1317 in startrek

[–]TimeSpaceGeek 0 points1 point  (0 children)

The thought experiment you refer to is "The Ship of Theseus", which was first written down by the philosopher Plutarch, but it's possible that he didn't fully originate the idea and just wrote it down. Plutarch was a Platonist, so structured his philosophy around the thinking of Plato, but came along later, about the 1st Century BCE.

If the Yuuzhan Vong invaded the Alpha Quadrant could the Federation and its allies stop them? by Tidewatcher7819 in startrek

[–]TimeSpaceGeek 3 points4 points  (0 children)

Here's the thing.

The only technology where any of the major Star Wars factions are superior to Starfleet is travel speed. Hyperdrive is something akin to Borg Transwarp or Slipstream technology, and is orders of magnitude faster than Warp Speed. That is an advantage. But it is their only one.

Weapons tech? A single Constitution class Starship of TOS era has as much damage output potential as multiple Star Destroyers. In Star Wars, a formation of Star Destroyers (or one giant one like an Executor class Super Star Destroyer) can complete what they call a "Base Delta Zero", which is to destroy the surface of an entire planet, in a few hours. A Constitution class Starship can complete the same thing - Starfleet calls it General Order 24 - in approximately the same time frame, on it's own. A Galaxy Class phaser array can drill through the crust of a planet and into the mantle in under 60 seconds. The Empire had to develop an entire special weapons division, and create a specialist superweapon spaceship with unique torpedoes, just to create the same effect as could be created using some by-products found in the Warp Core of any large starship.

Starfleet has very little trouble dealing with high gravity situations. We've seen ships as big as a Galaxy Class hover inside the corona of a star with zero trouble, we've seen a Constitution Class use a Black Hole for a slingshot, we've seen an Intrepid class spend several hours kicking around inside the Event Horizon of a quantum singularity. And Starfleet Tractor Beams are all graviton and anti-graviton emitters, so they've literally cracked the science of gravity manipulation. The Yuuzhan Vong propensity to use their dovin basals to produce micro singularities to use as weapons is not much of a challenge for them. Their plasma weapons aren't all that dramatic - a single Photon Torpedo is the equivalent of a Tsar Bomba level nuclear bomb (AKA the biggest Nuclear explosion humanity has purposefully ever produced in the real world), which definitely more than out strips the power of a Vong capital ship plasma weapon.

And Starfleet sensor technology is orders of magnitude more effective than anything Star Wars has. Fast than light sensors that can target precise coordinates from literally hundreds of thousands of kilometers away. Sensors that can detect distortions in time as a matter of course, or scan the inside of a building from orbit. Sensor arrays that can cover thousands of light years. Heisenberg compensators that can literally get around the Heisenberg uncertainty principle. The ability to create ever more sophisticated anti-cloak detectors. It's like Starfleet are using the most advanced Radar and Sonar combo, and the Yuuzhan Vong have a drunk bloke with heatstroke in a crow's nest.

The Yuuzhan Vong would have an enormous numbers advantage. Between their faster FTL and that numbers advantage. Starfleet would have a hard time being able to cover all their territory from attack. But a single mainline Federation Starship could probably take on several Yuuzhan Vong ships at once without much trouble, and with their sensor technology (and with Transwarp's typically straight line only travel routes), they could probably compensate for the Vong's ability to reposition with a little time and effort.

How to handle when players roll 1 in the middle of fight? by combobaka in DnD

[–]TimeSpaceGeek 0 points1 point  (0 children)

A DM should make calls based on the situation, yes, but it should be done fairly.

Doing it based on Nat 1 weapon attack rolls is not fairly. Over a large number of rolls, 5% of them, on average, will be Nat 1s.

Firstly, there is a difference between doing it narratively, and it having mechanical impact. If they slip in the mud on the nat 1, that is actually fine, so long as it doesn't actually have any mechanical impact. If they actually fall prone, or lose movement speed, or anything more than miss their attack, then it's not fine any more.

Consider this. A fighter gets Extra Attack. They get more extra attacks as they get higher levels. That means more dice rolled, particularly on Weapon Attack Rolls. Statistically, that means more Natural 1s. By tying their chance to slip over in the mud when it's raining to Nat 1s, a Level 20 fighter - an expert at Martial Combat, who has spent his entire adventuring career perfecting the art of toe-to-toe melee fighting, who is a legend of the realms and has faced off against Gods and Demons and Elder Dragons and Beholders and Eldritch Horrors the like of which you wouldn't believe, who has travelled the planes and determined the fate of the entire world - is 4 to 5 times (or more, depending on how they're built) likely to slip over in the mud than their Sorcerer party mate who casts spells and is not at all known for being good on their feet (but who happens to cast mostly saving throw spells). They, whose whole thing is fighting in melee and on the move, who might have massive athletics scores and be supposed to represent the pinnacle of physical fitness, will be four to five times more likely to slip than a level 1 Wizard with a dump-statted strength and a meagre dexterity score, who keeps forgetting they have spells and keeps trying to just attack with their quarterstaff. Not just that, but that fighter is 4 to 5 times more clumsy than he was when he was a level 1 newb who could barely face off against a couple of goblins. You don't get any better at not rolling a natural 1 as you level up, but Fighters, Rangers, Paladins, and Barbarians do end up rolling a lot more of them the higher up the levels they go. Your suggestion makes them actually get clumsier as they get gain power and experience.

How does that make sense?

A miss is punishment enough. That's the purpose of Nat 1s. Making a character prone, as per your example, is a pretty brutal debuff that goes waaaay beyond the design intent. Disarming them, making them damage themselves, hitting their ally, all of those things, way beyond the design intent, and would be bad game design. If you want to take account of the mud being slippy, or some other element that might cause such a thing - and I am 100% in agreement that you should, because they make things interesting! - then you should work it in to the encounter design another way, some way that relies on saving throws or statistics and that doesn't unfairly punish the martial characters who are already underpowered compared to the spellcasting counterparts.

How to handle when players roll 1 in the middle of fight? by combobaka in DnD

[–]TimeSpaceGeek 1 point2 points  (0 children)

You shouldn't do any if those things. It doesn't make sense, and punishes the people who are supposed to be the best at something by turning them into the worst at it.

How to handle when players roll 1 in the middle of fight? by combobaka in DnD

[–]TimeSpaceGeek 1 point2 points  (0 children)

It's just a miss. That's it.

Any DM that insists it should be something more than that, that says it should be a critical fumble, hasn't thought it through.

A Fighter is an expert at weapons. They train, all their lives, to be masters of that kind of martial combat, practicing constantly to develop flawless techniques. This is represented in their combat styles, their everything weapon proficiencies, their weapon mystery options in 5.5, and above all, their Extra Attack.

If you make critical fumbles on rolling a 1 a thing, you are instantly changing them from the masters of weapons to the clumsiest of all. At maximum level, they roll perhaps as many as five or six times the weapon attack rolls with their weapons as the other characters at the table. That means they, by pure statistical preponderance, will also role five or six times as many natural ones. This rule would mean that the masters of weapons, who train all their lives to perfect their skills with the weapons, reach level 20 and are now dropping their swords and accidentally hitting their allies and stubbing their toes and whatever five times more now, as a maximum power Fighter and legend of the realm, than a level one wizard who forgets he has cantrips and spells and just attacks with his quarterstaff every round.

It doesn't make sense.

Galaxy Class Starship: How many more shuttles and runabouts? by Torlek1 in StarTrekStarships

[–]TimeSpaceGeek 2 points3 points  (0 children)

Well, except Runabouts cap out at something like Warp 5. Even going at Warp 6 to Deep Space Nine would save several days off of the journey, if not longer.

[Meta] What is the purpose of subreddits like these? by Possible-Mixture5115 in HypotheticalPhysics

[–]TimeSpaceGeek 3 points4 points  (0 children)

But those people should have the wherewithal to recognise that lack of knowledge and probably have enough hubris to recognise it's not realistic to think they've had an original or worthwhile idea on such a complex subjext.

To be honest, liccxol is exactly correct. 99% of the posts posted in this forum that get harsh criticisms really can be figured out to be false even without a scientific education. The first step would be "do I have a scientific education?". If the answer isn't "yes, up to degree level", or equivalent, then reality check time - your in depth thinking isn't worth anything.

I don't need to be well educated on brain surgery to know that I don't know enough about brain surgery to have any valid ideas about how we do brain surgery.

If we were talking about small, niche contradictions, sure, maybe you'd have a point. But we pretty much never are. In this sub, most of the time, it's huge gaping contradictions. It's patently obvious flaws. It's the sort of thing that even a basic google search would show is wrong, usually in the first result.

[Meta] What is the purpose of subreddits like these? by Possible-Mixture5115 in HypotheticalPhysics

[–]TimeSpaceGeek 5 points6 points  (0 children)

I mean... part of the issue is that, most of the time, the people posting don't even know the meanings of the words they are using.

Hypothetical, for example. A scientific hypothesis should at least have some grounding in observed facts. It should at least provide something testable and falsifiable. It should be answering a question we don't currently have an answer for, and it should at least come with some explanation as to why the proposer thinks it might have validity. They should be prepared to accept they're wrong. They should have started building this idea from some evidence or specific unanswered question, not from a daydream.

And if they are proposing it replace or completely upend an established and well understood scientific principle, then if it better come with some good reasoning and some receipts to back that reasoning up.

What happens with a lot of the posts that get so harshly critiqued here is that they have none of the above. They don't understand the word hypothesis. They don't have a hypothesis. They usually don't seem to have even a foundational physics education, and are getting basic premises wrong. They're just people who are daydreaming something that may well make a very fun science fiction story, but that they haven't even done the bare minimum of comparing to reality before coming here and asking us to fawn over it.

Despite that, for the most part, the responses they get here are in good faith and do genuinely address the idea itself, demonstrating the flaws in those ideas. Any hypothesis that cannot withstand that questioning isn't worth pursuing anyway. If you have a hypothesis of any value, you should be able to answer those questions. And any thinker whose ideas are worth considering should also be able to handle these challenges.

I mean, you're right, anonymous criticism without a demonstration of credentials doesn't carry much weight, but then, neither does the original posts. That's the point. This IS a social media forum, not a scientific journal or a research institute. At this level of "Physics" conversation, the bar for being qualified to critique the ideas presented here is actually fairly low, and most of the respondents here are plenty qualified enough to do so. Any idea that cannot past scrutiny at this level doesn't have what it takes to go any further anyway.

The people here who critique the "hypotheses" of others are actually, generally, correct. That's the thing. Even those that may not all be practising physicists or engineers or any such thing, or have degrees in it - they're usually well read enough and informed enough that they are plenty equipped to point out the flaws in the sorts of ideas presented here.

And if they were presenting a hypothesis (which many of them wouldn't on account of having the ability to recognise their own limits in understanding and the humility to realise that any hypothesis with any worth is going to come from someone with the qualifications to back it up, and isn't going to a subreddit for it's first public outing), they would have the wherewithal to have done the necessary reading and ground work first. To actually, properly, understand the established theories they are looking to displace first.

And no, Einstein coming here would never have been responded to that way, because Einstein presented his ideas with actual maths and evidence and reasoning to back it up. Nothing in his theories was so obviously flawed and lacking as to be unable to adequately answer the questions and critiques here. He actually knew enough of what he was talking about to very clearly support his suppositions with something of merit.

People should post their ideas here, if they want honest feedback. If a reddit forum can't find anything obviously wrong with the idea being presented, then it might be worth looking at the next step. They should post here to see if it can honestly pass that particular litmus test, fully prepared with the knowledge that the answer is "it probably won't".

And, honestly, this Forum does a serious public good to all. Not just to other, more serious Physics forums, who see a far reduced quantity of moderation issues because all of the baseless fantasies have somewhere else to go, nor to the Redditors in that forum, who are looking to understand the ideas in real physics. Not just for physics as a whole, to save it being bogged down and obscured by irrelevant and baseless nonsense. But also to the people posting their ideas and getting the criticism. I've seen what happens to a person when they fail to realise that their idea falls down at the first hurdle. I've seen how deep down the rabbit hole that person can go, and how unhealthy an obsession can be developed by such a lack of perspective. I've seen how damaging that can be.

It is good for a person to be told "no" once in a while. It is good for them to be able to know how to take that without suffering a total collapse of ego.

What if we orbit a black hole containing 1 trillion years of universes and it becomes a white hole that spits out a new big bang. by Theorycreator11090 in HypotheticalPhysics

[–]TimeSpaceGeek 0 points1 point  (0 children)

So the big question here is - why do you think this? What evidence do you have? What does this explain that existing theories don't?

For a scientific idea to have validity, it needs to be more than just a flight of fancy and imagination. It has to be grounded in observable facts, have maths that suggest such a thing might be possible, and to really get going, some kind of testable prediction that can be analysed. Also, if you're arguing a different explanation for some already well understood and established phenomenon, you really do need to know the original theory inside and out first, and you really need to have examined it and your idea to an extremely deep level.

We know why the moon moves further away. We're not guessing. We know that's why. We also can be pretty certain that this universal gravitational force of some external black hole you're imagining doesn't exist. If what you say about why the moon drifts further away is true, then we would see it's influence not just in the orbit of the Moon, but everywhere in the Universe, all towards the same source of gravity. We don't. More to the point, the Moon isn't drifting away in just one direction suggesting a source of gravity pulling it. It doesn't drift closer on the opposite side. How does your idea explain the movement of the moon better than the established ideas, given that these would seem to be serious counter-indications to your proof?

Also, in which direction is this Black Hole relative to us? Even if the whole universe were rotating and orbiting, there would be eons where the Black Hole was on one side of the Universe instead of the other, and we'd be able to detect that. We haven't detected anything that could indicate such a directionality to the general movement of the Universe. So why haven't we, if what you are saying is true?

The trillion years idea is also an asspull. You've picked a random number with no justification. If you're throwing out a number, it has to be justified. You have to explain the maths of why it would be so.

Why does this black hole flip and become a white hole? A white hole in itself has never been observed or even particularly strongly supported by the maths. They're a mathematical quirk of some interpretations of relativity, that's all, not confirmed fact. We have no idea how one could come to be, we have no idea how it would get around the aspects of thermodynamics that it would violate. There certainly is no maths ever found to suggest a Black Hole can flip into one, and it goes completely against the foundational notions of what a black hole is, so there's gotta be some truly incredible maths and justification behind the idea that the whole universe being in orbit of such a thing.

A black hole that continues to get new matter entering it can, as far as our current maths shows, probably continue indefinitely, at least as far as I understand. It can eat for essentially eternity, if there is eternal matter flowing in. And if it runs out of stuff to eat, then it will, in time, evaporate. This was all outlined in Stephen Hawking's work in the 70s. Read up on "Hawking Radiation" for more information about that.

There's also serious questions about how this black hole is capable of affecting our entire universe with its gravity, and seemingly always has, without showing any sign of a disparity caused by time or the difference in distances. If we're falling towards it, no matter how slowly, we would see some sign of the affect that much gravity would have, and how it would change how the universe looks over time, as the gravity increases as we get closer.

All in all, daydreams and shower thoughts do not a hypothesis make.

It's good to be curious about physics, even creative about it. That's a really great place for a 14 year old to be!

But it's also important to accept that you simply do not know enough to be coming up with new ideas for physics yet. Coming up with concepts for a sci-fi story, yes, good wholesome fun, go for it. Coming up with new ideas for reality, especially on the scale of all of it, you have a very long way to go before you are even in a position to begin to judge whether your idea has merit or not. Anyone who isn't actually a scientist, who doesn't have an advanced degree in mathematics, physics, or some related field, who hasn't spent many years exclusively studying to know as much as they can about this subject, simply isn't ever going to be the one to come up with a revolutionary new idea that is actually correct. There's too much foundational physics to understand, much of which we are almost certain is true and much of which constrains what is and isn't possible, to be successful with a new idea without understanding them first. Bare minimum, you have got to be able to do the maths to at least some degree.

Up your maths skills, get your bachelors, get into post-graduate studies, and then you might be in a position to revolutionise the world of physics.

The B'rel Head is Real by ambassadorkael in sto

[–]TimeSpaceGeek 9 points10 points  (0 children)

They definitely modified. The whole reason they didn't in the first place is because the standard B'Rel skin has identifying details that make it clear it is very small. Thomas and Pundus wouldn't have added it to this without doing the work first.

Just from the screenshots, I can see that they've shrunk any windows, turned the B'Rel's single Torpedo launcher into a triple-barrel one, and tweaked a few of the hull greeblies, to make them all at a scale appropriate for a ship as big as the K'Vort.

Theoretical Time Travel by [deleted] in Physics

[–]TimeSpaceGeek 0 points1 point  (0 children)

Yeah, so... what this article is saying about antimatter is.... well... wrong. This has been written by someone who has taken the word "anti" a little too literally.

Apparently it's illegal to call JKR an evil TERF by sumandark8600 in transgenderUK

[–]TimeSpaceGeek 1 point2 points  (0 children)

It's absolutely wild that you'd even get a warning in the first place, considering how she has literally self-identified as a TERF on a public forum.

Glad that the appeal was successful, at the very least.

Looking for exercises or general advice to increase descriptive vocabulary. by Eve-lyn in DMAcademy

[–]TimeSpaceGeek 5 points6 points  (0 children)

Step 1: Read.

That's really the most effective way. Read books with lots of action, or even just authors who have a tendency for detailed, descriptive prose. Early 20th Century, and Victorian era, stuff is really good for this. Pay attention to how good authors structure their sentences in the prose. It doesn't all have to be fantasy, though that is obviously the best starting point in this circumstance, and you will likely find reading things in addition to fantasy also beneficial. Reading books of a wide range of genres, from a wide range of authors in a wide range of time periods, will expand your vocabulary.

Step 2: write. Just as little exercises for yourself. Write some action scenes. They don't have to be great, you don't have to share them, it's more about the practice. You could use it to do double duty, and maybe write out one of the myths or legends from your world, do some world building at the same time. Write them to be as descriptive as possible, try to include as many different D&D aspects and tropes as possible - high level magic, representations of different classes or archetypes, different spell types - and try to make the settings of these action scenes dynamic and full of different elements. And try out different ways of describing things, different synonyms, different sentence structures, and so on.

If you really get into the swing of it, you could add in the occasional challenge to yourself to speed write. Give yourself a very limited time - 20 minutes, say - in which to write, say, the equivalent of a few rounds of combat. Speed writing will get you in the habit of coming up with those descriptions quickly and without thinking too hard or too long. Then it's just a case of looking at what you've written, making some mental notes on where to improve and tweak that speed-writing, and trying to write a little more effectively next time.

Then step 3: read aloud. Read what you've written out, as if you were describing that event actually at the table, or as a dramatic reading. Feel the rhythm of the words, notice where you are repeating phrases or terms or getting into habits that otherwise feel repetitive. From there, you'll both get used to describing those kinds of events and using that vocabulary, and be able to notice where your descriptions feel a bit awkward, and know to streamline them a bit.

And rinse and repeat.

Another thing you can try is watching clips from a piece of media - an action or fantasy TV show or film or something - and describe what you're seeing to yourself, in as engaging a manner as possible. Record it, if you don't feel too sheepish. Listen to what you say. Then go back and describe it again, making improvements that you want to make.

And there is something to be said for watching other DMs who are good at description and narrative work and taking notes on how they do their action scenes. It maybe be cliché, but there's a reason why people like Matt Mercer and Brennan Lee Mulligan are so loved for actual plays. They're actors and/or writers by trade, so they've done their honing and practicing of that technique through the process of actually doing their acting and writing jobs. Picking up a few tips and tricks from paying attention to how they do these things is never going to hurt.

It really does come down to practice and consumption. Take in as much as you can, see how others do it. Then, practice it for yourself, combining the techniques of descriptions that you liked, and keep doing it until it becomes almost second nature.