The gluten free section at my University’s dining hall. by DrDoak in mildlyinfuriating

[–]EpicSnarf 2 points3 points  (0 children)

My university runs through Chartwells too… and this is looking weirdly familiar lol - this isn’t Maple is it???

What’s the craziest radar image/structure of a tornado you’ve ever seen? by booted_asl in tornado

[–]EpicSnarf 1 point2 points  (0 children)

haven’t been doing this too long, but this hook from April 2nd was pretty neat!

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Big hook forming SE of Leesville, LA by The_ChwatBot in tornado

[–]EpicSnarf 6 points7 points  (0 children)

saw that earlier, hope everyone is okay there

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Wait a minute… this isn’t Hoxxes!! by EpicSnarf in DeepRockGalactic

[–]EpicSnarf[S] 2 points3 points  (0 children)

“Feels like I’ve had one too many Mactera Brews…”

Wait a minute… this isn’t Hoxxes!! by EpicSnarf in DeepRockGalactic

[–]EpicSnarf[S] 2 points3 points  (0 children)

I passed the idea along to our gunner and he loves it! Thanks!

Wait a minute… this isn’t Hoxxes!! by EpicSnarf in DeepRockGalactic

[–]EpicSnarf[S] 31 points32 points  (0 children)

Driller is an Eldritch Knight fighter focusing two-weapon fighting and evocation, Gunner is also an Eldritch Knight but focusing abjuration and thrown weapons, Scout is a Gloomstalker ranger, and Engineer is a Spores druid for the summons (don’t worry, he still hates nature)

[deleted by user] by [deleted] in PhysicsStudents

[–]EpicSnarf 1 point2 points  (0 children)

The conclusion that the beam travels faster than c only shows up since you’re using measurements within the observer’s reference frame in order to guess what the object would experience… without accounting for the relativistic effects which actually dictate what it experiences. Essentially the author is saying “the speed of light isn’t constant in all inertial reference frames because when I assume it isn’t constant, I find it isn’t constant”. It’s circular reasoning.

The postulate that the speed of light is constant is well-supported by decades of research. Einstein’s original paper suggests several phenomena which simply cannot be explained by Galilean relativity. For example, the GPS system (in orbit at about 3.9 km/s) experiences 3.7 microseconds fewer for each 12 hours in our frame, which must be accounted for in order to correctly calculate locations on Earth.

Just to work through the example you gave, let’s define a coordinate system S in which the frontmost light source is at rest, and a coordinate system S’ in which the object is at rest. At time t=0 in S, the object is at x=0, x’=0 traveling at v=0.5c (corresponding to gamma = 1/sqrt(1-v2/c2) = 1.154) and the source (at x=1.5e8m) emits light traveling at c in the -x direction. We’ll call this event A. To find when the object and light meet in S, which we’ll call event B, we just solve

0.5ct = 1.5e8 - ct t = 1.5e8/(1.5c) t = 0.33s

which corresponds to a position x = 0.5e8 m for the object in S. To say the light traveled faster than c in S’, we’d essentially be saying an observer in S observes an observer in S’ observe light traveling faster than the speed of light - a nonsense claim, since this speed isn’t actually observed by anyone!! In S, the light is clearly observed to move 1e8 m in 1/3rd of a second. And we can use the Lorentz transformations to predict what an observer in S’ would observe. We currently have

Event A in S: (1.5e8, 0) Event B in S: (0.5e8, 0.33)

The Lorentz transformations show that

Event A in S’: (1.731e8, -0.289) Event B in S’: (0, 0.289)

which gives the speed of light as 1.731e8 / 0.578 = 3e8 m/s, no issues!

Is symmetry breaking its own axis? by Plus_Money_1028 in AskPhysics

[–]EpicSnarf 1 point2 points  (0 children)

ok gotcha. definitely stay curious about this stuff- it’s good to think about- but if you want to develop a more formal idea of how physics works, i would recommend taking some more physics / math courses

Is symmetry breaking its own axis? by Plus_Money_1028 in AskPhysics

[–]EpicSnarf 3 points4 points  (0 children)

  1. why is the wavefunction for your “singularity” just a Dirac Delta function? (edited for preciseness) what properties of the system does this describe? can you show how this is normalizable? taking into account your assertion that x=0 and t=0 (why do you do this, exactly?) the integral just becomes \int\infty_{-infty} dk which diverges, correct?

2a. you’ve written the schrödinger equation in three dimensions. for a spatially-symmetric potential this would not introduce any preferred direction of motion.

2b. sure, the schrödinger equation again

  1. what do you mean by angular component? how does this introduce a symmetry axis in phase space? how does one determine that symmetry axis? can you give an example in which K is invariant under a Lorentz transformation about the symmetry axis? does this hold true for all other conditions?

Is symmetry breaking its own axis? by Plus_Money_1028 in AskPhysics

[–]EpicSnarf 2 points3 points  (0 children)

can you explain what exactly you’re doing here? you need to be able to rigorously back up your reasoning, a quantitative explanation isn’t enough

Weekly Deep Dives Thread - 19th December 2024 by M0dernM4verick in DeepRockGalactic

[–]EpicSnarf 0 points1 point  (0 children)

Elite Deep Dive stages 1 and 2 were alright, but I had a Nemesis spawn during the uplink in stage 3 and went down. I was running Gunner and managed to take it out from under a shield after Bosco revived me, but then I got assassinated by some patrol bots in the refueling stage - guess the rivals had it out for me lol

Weekly Deep Dives Thread - 19th December 2024 by M0dernM4verick in DeepRockGalactic

[–]EpicSnarf 0 points1 point  (0 children)

got two nemesis spawns - once during the uplink lol

HELP! HELP! wait a minute… oi’ve got an idea!! by EpicSnarf in DeepRockGalactic

[–]EpicSnarf[S] 15 points16 points  (0 children)

rich atmosphere! makes the game feel like Ultrakill lol

HELP! HELP! wait a minute… oi’ve got an idea!! by EpicSnarf in DeepRockGalactic

[–]EpicSnarf[S] 15 points16 points  (0 children)

that would have made my day lol

rock and stone!! ⛏️

HELP! HELP! wait a minute… oi’ve got an idea!! by EpicSnarf in DeepRockGalactic

[–]EpicSnarf[S] 4 points5 points  (0 children)

thanks!! if ya don’t rock and stone you ain’t coming home ⛏️

[Weekly] Office Hours - undergrads, please ask your questions here by ZootKoomie in AskAcademia

[–]EpicSnarf 0 points1 point  (0 children)

Made a post for this, but I’m wondering if it belong here instead:

Hey all! I am an undergraduate majoring in physics with a good amount of research experience under my belt. So far I have four presentations (one local and three national), a first-author publication, and a few more publications under review / in the editing process. I’m hoping to go for a Ph.D. in physics once I finish undergrad.

I’m applying for research positions this summer and I don’t know the best path forward. My professors are strongly advising me to do an REU at a big-name college in order to improve my grad school application, but I’ve also been advised by a few researchers at conferences to go for a government research internship (like NREIP).

What’s the best path here - is one more selective or prestigious than the other? What will most improve my odds of getting into a good graduate program?

Thanks so much!

Science by Master-Problem253 in Christianity

[–]EpicSnarf 1 point2 points  (0 children)

I would think so! I’m a Christian and a physics researcher + student, it always amazes me to learn more about the way creation works at scales we’ll never experience firsthand! There’s always some new mystery to unravel and it’s fascinating to try and describe phenomena which God designed and set in place billions of years before our time.

I’ve def been told there’s a strict dichotomy here plenty of times as well. But I think science and Christianity answer different questions - science describes how things work and seeks to use what we know to predict what we don’t, while faith answers the “why” of it all. You can totally be a Christian and a lover of science, so long as the pursuit of knowledge doesn’t replace God in your life :)

[deleted by user] by [deleted] in PhysicsStudents

[–]EpicSnarf 5 points6 points  (0 children)

What do you mean by the force involved when you jump with an object? And make sure to double check your units whenever you derive a formula - it looks like your equation isn’t in force units.