this post was submitted on 07 Feb 2025
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Science Memes

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submitted 1 week ago by [email protected] to c/[email protected]
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[–] [email protected] 19 points 6 days ago (1 children)

https://xkcd.com/1391/

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[–] [email protected] 10 points 6 days ago (2 children)

In a sane world this would earn you a dunce hat. In this one it will earn you a position in the gubmint.

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[–] [email protected] 7 points 6 days ago (1 children)

Teacher: I meant the global we. So it would average out to 8 minutes.

[–] [email protected] 5 points 6 days ago (1 children)

Someone at day will inform sun is missing to the people on night

[–] [email protected] 2 points 6 days ago (2 children)

A person can't inform others faster than the speed of light.

[–] [email protected] 6 points 5 days ago (1 children)

But collectively nine women can have a baby in one month.

[–] [email protected] 2 points 5 days ago

this guy money balls

[–] [email protected] 1 points 5 days ago

Fraction of a second for transmitting information from one side of earth to other side. And teacher only said 8 minutes and the seconds are ommitted as there is always an error margin since distance from sun is not constant.

Also i assume signals are always sent from other side of the earth

[–] [email protected] 6 points 6 days ago (3 children)

What about gravity? I know I read something about this once, but is gravity also limited to the speed of light?

[–] [email protected] 7 points 6 days ago (1 children)

Yeah, we'll feel it after 8 minutes all right :-)

Gravity travels at the speed of light.

[–] BigDanishGuy 5 points 5 days ago

Does it? In my experience alcohol can delay gravity

[–] [email protected] 5 points 6 days ago (1 children)

From what I know, particles that have a mass greater than 0 move below the speed of light and can never reach it. Particles that have no mass (every force is transferred via particles) move at the speed of light. So there is no way to have anything that is faster than the speed of light, not even forces.

[–] [email protected] 4 points 6 days ago

Yep, it is. We'd stay in our orbit of the sun for 8 minutes after it vanished too

[–] [email protected] 3 points 6 days ago (2 children)

I believe we'd still be warm for those 8 minutes. We have an 8 minute grace period before having to do anything, then enough time to add sweaters faster than earth cools.

[–] Naz 6 points 6 days ago (6 children)

I was forced to calculate the black body temperature and radiation for the Earth, back in college by hand.

I decided for fun to zero out the sun from the equation to see what would happen.

My math came out to about -32°C average surface temperature.

Earth would become an ice planet.

I think you'd uh, need a bit more than a sweater in those conditions 😅

[–] [email protected] 3 points 6 days ago* (last edited 6 days ago)

People live in those temperatures in places like remote Russia, right?

https://en.m.wikipedia.org/wiki/Oymyakon

[–] [email protected] 3 points 6 days ago* (last edited 6 days ago) (2 children)

It's sweaters all the way down. You have time to order from China shipped by boat before -32C happens. You're just being a "save the sun" hippy climate alarmist /s. Energy company shareholders would benefit from high demand, so saving the sun is just selfish of you :P

[–] Naz 3 points 6 days ago (1 children)

I'm just imagining you shuffling out wearing six layers of different colored sweaters on the frozen tundra surface, lmao

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[–] [email protected] 2 points 6 days ago

We're for the jobs the fossil fuels will provide.

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[–] [email protected] 2 points 6 days ago

it's because light takes 8 minutes to get from the sun to us. and since gravity also travels at the speed of light our orbit would only change after 8 minutes.

[–] [email protected] 4 points 6 days ago

That's boring.

Can we just have the reverse, like a "When Day Breaks" scenario? At least its fun.

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