🧵 random thoughts before sleep
Anonymous at Sat, 9 Nov 2024 08:42:15 UTC No. 16468092
>light is the fastest thing in the universe
>we can't reach that other galaxy because the speed of expanding universe is faster than the speed of light
>that meant light is not the fastest thing in the universe
>somehow expanding universe is not a speed
i don't get it
Anonymous at Sat, 9 Nov 2024 09:01:53 UTC No. 16468100
>>16468092
Light is 1 a moving thing.
Two cars driving opposite directions from one another is not 1 moving thing (it's taking the difference between 2 moving things)
Anonymous at Sat, 9 Nov 2024 09:17:33 UTC No. 16468107
>>16468092
Read Stephen Hawking's A Brief History of Time.
Time (and speed) is relative. Understand relativity and you'll understand why both statements are true.
Anonymous at Sat, 9 Nov 2024 11:54:42 UTC No. 16468183
>>16468092
>the speed of expanding universe is faster than the speed of light
This is likely wrong. You can look it up for a much better explanations for what I could give here. Theory of relativity is confusing, but the lesson from it is that we can't apply our everyday physical intuition on a cosmological scale (just like we can't do it on an elementary particle scale due to quantum mechanics). The next natural question is 'Can we create a theory that explains both the differences from our scale that arise on a macro- and microscales' and it's still an open problem. Most intuitive solutions don't seem to work.
>>16468100
Two photons moving in opposite directions still move at the speed of light wrt each other, so that analogy isn't that good for the situation.
Anonymous at Sat, 9 Nov 2024 12:16:40 UTC No. 16468204
>>16468183
>Two photons moving in opposite directions still move at the speed of light wrt each other, so that analogy isn't that good for the situation.
Wrong. By definition, the relative velocity is the difference of velocities so the relativie velocity HAS to be twice the speed of light
Anonymous at Sat, 9 Nov 2024 12:30:59 UTC No. 16468223
>>16468204
>relative velocity
https://en.wikipedia.org/wiki/Relat
Anonymous at Sat, 9 Nov 2024 12:46:26 UTC No. 16468229
>>16468204
Wrong. The relative velocity of two photons moving in opposite directions is still the speed of light.
What OP is not understanding is that the speed of light isn't changing, that remains the upper limit, but the distance between two points is increasing. It's like driving along a road to reach your destination but someone keeps adding more road, if enough road is added you will never reach your destination no matter how fast you travel.
Anonymous at Sun, 10 Nov 2024 00:42:25 UTC No. 16469010
>>16468229
Put 2 lasers back to back, turn them on, photon travels right at speed of light
Photon travels left at speed of light
Do the math
Anonymous at Sun, 10 Nov 2024 00:47:54 UTC No. 16469024
>>16468183
did you just google and highlight an answer from quora?
Anonymous at Sun, 10 Nov 2024 00:53:25 UTC No. 16469036
>>16468204
Each photon sees the other photon move at c. But they don't see themselves move at all, there entire existence just "is".
Photons see us massies slogging through the Higgs trying to watch them and just laugh.
Anonymous at Sun, 10 Nov 2024 01:11:22 UTC No. 16469056
>>16468229
>let me tell you something we have never witnessed
Nah, I'm good.
Anonymous at Sun, 10 Nov 2024 01:14:10 UTC No. 16469062
>>16468092
Every girl you know (over 16yo) has sucked many MANY dicks.
Ok goodnight.
Anonymous at Mon, 11 Nov 2024 22:33:49 UTC No. 16471336
>>16469024
I used Google and Wikipedia, something which OP and this idiot >>16469010 failed to do. Why would I expend any more effort on them?
Anonymous at Wed, 13 Nov 2024 01:54:38 UTC No. 16472718
>>16468229
>>16469036
You can't create a reference frame moving at the speed of light.
Anonymous at Thu, 14 Nov 2024 11:47:52 UTC No. 16474635
>>16468092
If we could exterminate niggers the world would be a better place
Anonymous at Thu, 14 Nov 2024 12:10:12 UTC No. 16474667
>>16468092
Ponder physics during bouts of insomnia gives you cosmic insights.
>Falling into black hole
>Local time gets slower
>It looks like time speeds up around me
>Space is compressed by the gravity
>It looks like space expands from my point of view
>I fall into the future, which is full of space that seemed to suddenly expand
>I look backwards
>it's the microwave background
Our universe is just the result of something falling into a black hole, it's a fractal witn2jh black holes all the way down.
Anonymous at Thu, 14 Nov 2024 19:23:42 UTC No. 16475096
>>16469010
[math]\frac{\mathrm{c}-(-\mathrm{c}