This is truley amazing.

Lucid Lounge
21

man, my psychology teacher tripped me out a few days ago. i was telling him about how its possible that everybody sees colors differently, but whatever collor you see, thats what color you know it as instead of the color it actually is. Like a stop sign is red, but it could be how i see green, or blue to another person, but since we cant find words to explain what a color is, other than what we were told it was to begin with, then we never know how others see colors…

anyway, he told me that he believes in the big bang theory and that the universe is expanding. What if, one day, it implodes back to that tiny particle, then starts expandind again. Would everyting be the same as it was to start off, and if it was, then this exact thing has happened milloins of times and wil happen millions of times again…

22

I wondered that too about those colours.Many times.
Someone could see grass with a colour that looks like red to me, but he calls it green.

And yes, scientist were investigating if the universe is still expanding or not.
They found out that it’s expanding even faster than at the time of big bang.
They also came with the conclusion that it will shrink in future.

23

If that were true, then when somebody said like:

“Color this part of the room red”

And the other person ended up coloring it blue, it wouldn’t work.

24

no … because you would actually paint it the correct colour but it would just look a different colour to you.

25

No, think about it: they have the same word for the objective color, it’s just that their perception of the color is different. So both people say “red” as a name for something, but they just see it differently.

But anyway, the only real difference that I know of that can exist between two people’s perception of color is the phenomenon of colorblindness. A person can be low on certain cones, or devoid of them completely. So things are a bit off. But if two people have the same amount of each color cones (red, green, blue) the image is the same. I mean, it’s a funky idea, but when you know how color and light works, with frequencies and junk like that, there’s no reason that it would just be jumbled up from person to person. But things can be skewed if certain color cones aren’t there.

Ya know that bees can see ultraviolet light? I wonder how that looks. :cool:

Oh, and kava, you know what’s even cooler than the sun’s light taking eight minutes to get here? Stars that are thousands of light years away! So instead of looking eight minutes into the past, you’re looking years into the past. But that’s old news!

But what isn’t old news to me is how long it takes light to get from the center of the sun to the surface. Awesome! Thanks for saying that, whoever said that!

26

Cool, never thought about it.

27

White is the absents of color as where black is the combination of all colors, so I dont think its true that we all see diffrent colors, because white is white. Think about it if you went outside, and saw dark as light, or white then it would look like day time to some people. When the lights are turned off you see black not white. If this were true that people saw diffrent colors then some people would be able to see in the dark sence the color for dark is black. Here is another entersting fact did you know the color red actualy lowers your intelligents. I think blue increases your intelligents. I try to avoid red when ever possible, but damnit I have to wear a red shirt at work. There is alot of red in Oklahoma. The color orange makes you hungry, thats why alot of fastfood joints are orange. I dont know what yellow does, but to me its the most anoying of all colors. Dark blue like this forums backgroud is my favorite. I think it might actualy increase dream recall. It very calming. Blue can allso make you feel cold. White is the most borings color. Green to me is a very productive color. It makes you want to work allmost. I hate, hate red. It is a very stresfull color.

28

Cool thing is, the entire universe we see likely isn’t anywhere near the whole universe.

Say the universe we can see is about a billion billion times wider than the sun, which in turn is a hundred times wider than the earth.

The actual universe could be a billion billion times bigger than the visible universe. This is because the universe expanded a huge amount early on in its life.

It could even be infinite.

You say that the entire universe’s matter is contained within a grain of sand compared to a 20 by 20 by 20 mile room? It is certainly incredible then that the single grain of sand - all of the matter in the visible universe - contains about a hundred million billion billion billion billion billion billion billion billion atoms, or:

100,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 ,000,000,000,000,000,000,000,000 atoms.

A 20 mile cubed room could contain 100,000,000,000,000,000,000,000 of those grains of sand.

29

Well i dont get how the universe is infinite. I mean, it must be contained inside something. it’s like if you had a fish in a tank, and all the walls of the tank were black, and say, thousands of miles long. That fish would think the tank was infinite. If that makes sense to anyone.

If you’ve ever seen the simpsons episode where lisas science experiment grows ino its own mini civilisation, i think its abit like that. Tha were just a little passime for a humungus … thing, person, whatever. Like we have dollhouses, but on a much bigger scale.

And about the colour thing, how come boys mostly like “blue”, and girls “pink”. If we all see colours differently it certainly beats all odds that a cerain gender likes thier version of pink or blue.

30

The idea of an infinite universe is just an idea. We can’t confirm it nor dismiss it because there is no evidence for or against it whatsoever. But it certainly could be infinite.

Your analogy is a bit off by the way, because the fish tank is contained within a room, which is contained within a house, which is contained within a town, which is contained within a country, which is contained within the world, which is contained within the universe…and so where does it stop? If the universe is the final item, then it is different to the fish tank because it is not contained within anything, and so could therefore be infinite. If it is not the final thing, then there must be something that holds the universe, and so on, until we either get to the final thing, which could be infinite, or we continue on forever with something always containing the previous thing, which would be an infinite sequence anyway!

So an infinite universe is perfectly possible. There is no evidence either way though.

I think it would be pretty cool if it was infinite though.

31

Close your eyes, and think of the darkness you see being infanent, maybie thats how it works. The space between your eyelids, and eyeball is very small, but the darkness could very well be infinent. Maybie the infinant is something toataly diffrent then what we are thnking it is.

32

Well on the flip side, the opposite of infinite would be a finite universe, which would mean we would find either an end to it, or in traveling very far in a straight line you would end up back where you started. Either of those possibilities seems even weirder to me than an infinite universe.

What would the edge of the universe even look like? It would have to be a huge impenetrable wall. That just seems silly :rofl:

33

no, i mean, you were both taught that whatever color you see infront of you is what color it is. Say he was to paint the room red, you were both taught it as red so that’s what you know it as and can’t show anyone else how you see it because there are no words to explain what a color it other than what you were told it was to begin with. so you would both see “red” but his “green” might be how you see red, but he thinks its red because thats what he was taught it was. So pretty much, you see red, and he sees green, but you both call it red, because that’s what you were taught it was.

34

color is produced when light reflects and refracts off a surface, if there is no light, you see no color. Black is just what happens when there is no light. I’ve been told it was a mix of all colors, but i think that’s just how you make black with paints and such. black and darkness are two different things. Darkness is the absence of light, which in turn prevents you from seeing the color that’s produced when light is present.

but who knows, you could be right, i could be right, no body knows, and that’s what makes these kind of things to trippy.

35

What you guys were talking about before, about time being relative and everything, is called time dilation. Or, the theory anyway. It says that if you’re traveling close to the speed of light, what you might see as one week may be centuries on Earth in ‘standard time’.

If you’re interested in things like that, read The Forever War by John Haldeman.

36

One of the facts says that “A Comet’s tail always points away from the sun.” This kind of made me think of a gravitational pull in our solar system. It makes me wonder…

37

No, this is the most mind boggling video I have seen.
https://www.youtube.com/watch?v=OHsFMGTKTVE :tongue:

38

Tiney tiney tiney tiney universes all around us.

39

Yes, it really did expand the way I thought of things. Not just in that concept of multiple universes, but of how anything is possible. That everything single possible outcome has happened in a parallel universe. Any such claim can be made though. Still pretty mind boggling concept though. :smile:

P.S. I love that show, “The Universe” I have seen every episode!