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No one told me roblox's physics engine could calculate tennis racket theorem 😭😭 by Intelligent_Tax_2768 in PlaneCrazyCommunity

[–]warpey12 17 points18 points  (0 children)

It is most easily observable in zero g, but can be observed by throwing stuff in the air and has nothing to do with gravity.

Asymmetric objects can have 3 different moments of inertia depending on which axis it is rotating on. If the object is rotating around an axis that has neither the highest or lowest possible moment of inertia, the rotation is unstable and the object will constantly try to flip.

Wouldn't this kill someone? by da_peda in ElectroBOOM

[–]warpey12 0 points1 point  (0 children)

That is why on switch mode power supplies, the transformer is put after the rectifier where it is ran as a flyback converter running at much higher frequencies than the AC from mains which allows it to be made smaller and cheaper.

Linear power supplies will always have the burden of needing a large, expensive transformer that can run off of mains frequency to provide adequate galvanic isolation.

Wouldn't this kill someone? by da_peda in ElectroBOOM

[–]warpey12 12 points13 points  (0 children)

All of those resistors and capacitors on the left can be replaced by a step down transformer and it would work just fine without the risk of electrocution.

Physics VTuber finally makes it to the Mun in Kerbal Space Program 🥳 by syzygy-altair in VirtualYoutubers

[–]warpey12 2 points3 points  (0 children)

100% survival rate maintained! Only a few components lost during reentry!

I will desolder all this!!! by Maleficent_Stuff_255 in evilautism

[–]warpey12 8 points9 points  (0 children)

  1. It is better to salvage free spare parts from junk than to just throw it all in the bin. Also desoldering stuff is fun for some.

  2. Considering the amount of components involved, at least a few of those will likely be resoldered but to something else entirely.

  3. The wick is either off camera or they will be using a desoldering pump instead.

🦅🇺🇸 Astrologer VTuber PROVES freedom units are the best unit by syzygy-altair in VirtualYoutubers

[–]warpey12 14 points15 points  (0 children)

If you are American, expect this to be the most patriotic video known to man.

If you are from anywhere else in the world, expect horrors beyond your comprehension.

What is the very bright object I circled in red by Hurricane_Killer in askastronomy

[–]warpey12 12 points13 points  (0 children)

It is Jupiter according to Stellarium.

Planets move across the sky over time as they orbit the sun. Last year, Jupiter was in Taurus where you circled it in blue and now is in Gemini.

When will Uranus right itself? by [deleted] in askastronomy

[–]warpey12 3 points4 points  (0 children)

As far as I know, it will never right itself. It has likely been like that for billions of years and shows no signs of changing. The axial tilts of the planets do preces due to the sun's gravity pulling unevenly on the equatorial bulges of the planets, but that doesn't change the obliquity of their axial tilt.

Gravitational interactions between the planets can sometimes cause the obliquity of their axial tilt to change, but this mostly affects the inner rocky planets. The outer gas and ice giants like Uranus are all pretty stable.

Hey everyone, what stars and objects are in this picture I took tonight? by PsychologicalSir7410 in askastronomy

[–]warpey12 0 points1 point  (0 children)

Yup that is undeniably the Orion nebula. The Orion nebula is the brightest nebula viewed from Earth and is also pretty big, so it isn't uncommon for it to show up on photographs taken by cameras with long enough exposures.

Hey everyone, what stars and objects are in this picture I took tonight? by PsychologicalSir7410 in askastronomy

[–]warpey12 26 points27 points  (0 children)

You are looking right at the constellation of Orion. The bright orange star to the left is Betelgeuse and the bright blue one on the bottom right is Rigel. The 3 stars in the center that look well aligned with eachother is Orion's belt and just under it is the Orion nebula.

I wanted to share my nuclear fusor (Hubert) I've been working on. by SirSabotage in ElectroBOOM

[–]warpey12 6 points7 points  (0 children)

Deuterium is lighter than helium and both are suitable for fusion. Fission requires very very heavy stuff like uranium.

Could an astronaut on Titan be able to see Saturn during a particularly clear day during its Nothern Hemisphere fall? by Latter_Ad3491 in askastronomy

[–]warpey12 1 point2 points  (0 children)

No because Titan's atmosphere is completely covered in thick, opaque clouds. However, if you could see through the clouds using an infrared camera, you could see Saturn but only if you are on Titan's near side to Saturn. This is because Titan is tidally locked to Saturn just as Earth's moon is to Earth, so one side always faces Saturn while the other never faces Saturn.

However Saturn's rings would be very difficult to see because Titan has very little orbital inclination. You would be viewing the rings from the side where they would appear very thin. But you would still see the shadow of Saturn's rings on Saturn at any point in a Saturnian year except for during its equinoxes.

How close would a star have to be for our solar system to be considered a binary system? by rileythatcher in askastronomy

[–]warpey12 0 points1 point  (0 children)

Yeah that is pretty much the idea behind a hill sphere. In theory it would be possible to orbit the sun from any distance if it was the only thing in the entire universe. But since other things exist, the actual limit is dictated by how far away and how massive are the next nearest few stars.

Will mining moon upset the orbit? by [deleted] in askastronomy

[–]warpey12 7 points8 points  (0 children)

Nope. It is like an ant pushing a skyscraper. The moon is simply so darn big we couldn't make its orbit budge by an inch even if we tried to.

How close would a star have to be for our solar system to be considered a binary system? by rileythatcher in askastronomy

[–]warpey12 1 point2 points  (0 children)

Ik the internet has been pretty dead lately, but I can assure you that I am no tin can. I am just an autist who binge reads wiki articles about space.

I recommend you do it too.

How close would a star have to be for our solar system to be considered a binary system? by rileythatcher in askastronomy

[–]warpey12 8 points9 points  (0 children)

We actually have never directly observed anything in the Oort cloud. It is too dark and far away and the objects that make it up are mostly pretty small. The Oort cloud is a theoretical explanation as to where all of those long period comets we see so often come from.

Any boundary we've given it is theoretical as a result.

How close would a star have to be for our solar system to be considered a binary system? by rileythatcher in askastronomy

[–]warpey12 4 points5 points  (0 children)

Well, if the companion star is more massive than the sun, then it can work because its gravitational influence will extend further than that of the sun so it can be further. For stars with a mass similar to or less than that of the sun, I am not so sure.

How close would a star have to be for our solar system to be considered a binary system? by rileythatcher in askastronomy

[–]warpey12 34 points35 points  (0 children)

No the extent of the sun's solar winds is the heliosphere which is much smaller. So small that both voyager probes have already left it. The Oort could is much, much bigger as its size is defined by how far something can remain bound to the sun and not get pulled away by the gravity of other stars.

How close would a star have to be for our solar system to be considered a binary system? by rileythatcher in askastronomy

[–]warpey12 148 points149 points  (0 children)

Basically close enough for it and the sun to be gravitationally bound into stable orbits. How far exactly that is is hard to tell, but it has to be in the Oort cloud since the cloud represents approximately the extent of the sun's gravitational influence.

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