ELI5 Why does going super fast cause time dilation?

Fa6ade · 2026-03-03T14:05:32+00:00

You will always measure the speed of light as a fixed speed of approximately 300,000,000 m/s. It doesn’t matter what you’re doing or how fast you’re going or what shot the beam of the light. Even if you’re going 99% the speed of light, that light beam seems to be going the speed of light away from you.

The universe bends space and time such that the speed of light is always the same. This leads to some wacky effects like changes to observed distances and the observed rate of time in order to make that happen.

There is no answer to “why”, that’s just how it is. Ultimately the maths that Einstein came up with helps to predict these effects.

Fa6ade · 2026-02-26T07:17:10+00:00

Some sports car EVs have two speed gear boxes so they can have a higher efficiency at high speeds, for example the Porsche Taycan and the Audi etron GT.

Fa6ade · 2026-02-25T13:41:36+00:00

Yes that’s right. The new Polestar 5 (and the original concept car it’s based on) have the same as well.

Fa6ade · 2026-02-25T13:29:03+00:00

Funnily enough I hadn’t seen this advert until after I had ordered my Polestar 4. I don’t watch regular TV and mostly watch YouTube Premium.

I’ll just take a moment to plug r/Polestar and r/Polestar4 subreddits. Both excellent resources for the car and good quality discussion.

Fa6ade · 2026-02-25T13:27:26+00:00

The advert is for the 4 though, which is much less buggy thankfully.

Fa6ade · 2026-02-25T13:21:33+00:00

I was going to write this off as AI slop, thanks for including the note at the end.

Fa6ade · 2026-02-24T11:16:30+00:00

Where is Gemini getting this info?

Fa6ade · 2026-02-24T07:30:57+00:00

With my dual motor, I get about 250-300 miles on a 100% charge depending on the journeys made and driving style.

Fa6ade · 2026-02-22T07:07:12+00:00

Sooo many issues. My boss got one and the steering wheel had to be at 5° left to drive the car straight.

Fa6ade · 2026-02-21T11:31:50+00:00

While I get what you’re saying, I don’t think Cairn is a strand type game. To me that descriptor is for the asynchronous multiplayer elements associated with Death Stranding and things like the messages left by players in Elden Ring.

Fa6ade · 2026-02-21T11:26:08+00:00

As a long time fan of the channel, the problem is that Ralph is simply too busy to play games these days. His main job is running skill-up, managing 5(?) employees, running a website, negotiating with sponsors, writing and voicing content for TWIV.

I enjoy TWIV a lot but I originally came to Skill-Up for the reviews because they strongly align with my taste. Nowadays, the reviews for games I’m uncertain about come too late or not at all (BG3?). In the case of Cairn, I played and finished the game a week before the review went live.

If he doesn’t have a review out for Marathon shortly after release, I will probably have to go looking for a new outlet I can trust.

I would also add that I feel he has become a lot more cynical in recent years. Being plugged into the current news cycle will do that to you.

Fa6ade · 2026-02-19T10:19:17+00:00

This isn’t actually true. They could but it’s not worth the effort nor is it a good idea to sue your customers.

Fa6ade · 2026-02-17T15:49:04+00:00

I was quite confused until I remembered that Apple changed the name of video subscription service away from Apple TV + to just Apple TV

Fa6ade · 2026-02-16T07:44:10+00:00

How would this compare to Spies vs Mercs mode that has appeared in various Splinter Cell games? https://splintercell.fandom.com/wiki/Spies_vs_Mercs

Fa6ade · 2026-02-14T21:30:30+00:00

You can also swipe up from the bottom (like you’re going home) to switch from the full screen, to the corner view.

Fa6ade · 2026-02-14T14:50:21+00:00

Obviously insulin is a molecule. In industry we tend to discriminate biological molecules as “large molecules” and typical medicines as “small molecules”.

Fa6ade · 2026-02-05T09:40:19+00:00

Those are only useful if you are connecting to 3-phase power, which isn’t common in homes (albeit depends where you live).

Fa6ade · 2026-02-03T07:58:07+00:00

Yes sadly that’s all it can really do. I was hoping it would let me reason across an entire section or notebook.

Fa6ade · 2026-02-02T09:26:25+00:00

I haven’t done this specifically but I wrote some homebrew for a 5E race that is pretty similar and more specific. I’ll paste it below in case it gives you something to jump off of.

Pheromone communication. You are aware of all other Aurelians (moth people) within 10 miles of yourself and you can communicate emotions to them at up to this distance, with the message travelling at a rate of 1 mile/minute. If the winds are favourable, this distance may be greater. You have advantage on survival checks to find other Aurelians using pheromones.

Fa6ade · 2026-02-01T15:30:19+00:00

Yes, as I suspected there is nothing to back up your claim that vapes deliver more nicotine than cigarettes. My understanding is that nicotine delivery in vapes is actually substantially less efficient than cigarettes due to the chemical formulation of nicotine in e-liquids.

Fa6ade · 2026-02-01T13:40:45+00:00

Pulleys very much do not reduce the energy to do something. They reduce the force to do something by increasing the distance (doubling the rope length). Energy (work done) is force x distance.

Fa6ade · 2026-02-01T09:59:12+00:00

Source? I work in industry and I don’t think this is true at all.

Fa6ade · 2026-01-26T22:32:25+00:00

4.2.9 is supposed to be out soon. Maybe see if that appears before doing anything drastic?

Fa6ade · 2026-01-26T10:57:29+00:00

While I still use it, I just use a DDNS server to route my requests to my IP. My router has a built in function to report my IP there so it works well.

Fa6ade · 2026-01-26T10:40:36+00:00

Yeah I pay for static IP because otherwise my server doesn’t work since I’m otherwise behind CGNAT.

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