Simviation Forum - "Ye cannae change the laws of physics captain"

Reply #30 - Sep 24^th, 2011 at 7:31pm

Club508 Offline
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hyperpep111 wrote on Sep 24^th, 2011 at 7:29pm:

And I never imagined I would see an intelligent conversation here on SimV Grin

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Guess I was wrong Roll Eyes

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But good to see that you can even study here Grin

Define intelligent Roll Eyes

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Reply #31 - Sep 24^th, 2011 at 7:34pm

hyperpep111 Offline
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Club508 wrote on Sep 24^th, 2011 at 7:31pm:

hyperpep111 wrote on Sep 24^th, 2011 at 7:29pm:

And I never imagined I would see an intelligent conversation here on SimV Grin

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Guess I was wrong Roll Eyes

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But good to see that you can even study here Grin

Define intelligent Roll Eyes

A classic example non Intelligent is where we're going now Grin

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I'm still yet to Lips Sealed

Most people think that flying a plane is dangerous, except pilots because they know how easy it is.
Arguing with a pilot is like wrestling with a pig in the mud, after a while you begin to think the pig likes it.

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Reply #32 - Oct 2^nd, 2011 at 12:34pm

Xpand Offline
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Groundbound1 wrote on Sep 23^rd, 2011 at 11:31am:

Xpand wrote on Sep 23^rd, 2011 at 11:22am:

Groundbound1 wrote on Sep 23^rd, 2011 at 10:31am:

I've said it before in a thread on this very site. It isn't that hard to understand really...

1) Light has mass.

Gravity can only pull on things that have mass. Gravity can pull and bend light...ergo light must have mass. But here's the problem I have with that. Force equals mass times accelleration, and that SHOULD cause an issue. I'll give you an example...You go home to a dark house late at night, turn on the lights in your living room...and you still have a living room. Regardless of how small the amount of mass light may have, it's travelling at 186,000 miles per second, and therefore should destroy anything it comes in contact with. Why doesn't it? Back burner that thought for a minute...

Oh yeah... I forgot that one... Embarrassed

But isn't the space-time distortion caused by objects with mass that causes the light to bend, being that, if we take space as a 2D deformable plane and light constrained to moving in paralel line to the plane that's possile, light doesn't necessarily have to have mass.

I don't know, is the space-time distortion caused by objects with mass that causes the light to bend? Why make it harder than it needs to be?

AHAH!! Sorry guys! I'm a stubborn guy but it turns out that I didn't make it harder than it is! That's actually how it works: Photons have no mass, but have momentum and light responds to the curvature of the universe!
Quote:

We also knew that photons are affected by gravitational fields not because photons have mass, but because gravitational fields (in particular, strong gravitational fields) change the shape of space-time. The photons are responding to the curvature in space-time, not directly to the gravitational field. Space-time is the four-dimensional "space" we live in -- there are 3 spatial dimensions (think of X,Y, and Z) and one time dimension.

http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/961102.html

Up is the way to go.

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Reply #33 - Oct 2^nd, 2011 at 5:26pm

machineman9 Offline
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Physics: Lots of it is theoretical, lots of it is assumed, but all it is relevant Wink

I've studied it at college for 3 years and I'm still amazed at how much they just guess and spoon-feed. If an old equation is in threat of being proved wrong, they usually invent a new subatomic particle (they're often undetectable!) or tell you that you've calculated it incorrectly Grin

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Reply #34 - Oct 2^nd, 2011 at 5:33pm

Club508 Offline
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machineman9 wrote on Oct 2^nd, 2011 at 5:26pm:

Physics: Lots of it is theoretical, lots of it is assumed, but all it is relevant Wink

I've studied it at college for 3 years and I'm still amazed at how much they just guess and spoon-feed. If an old equation is in threat of being proved wrong, they usually invent a new subatomic particle (they're often undetectable!) or tell you that you've calculated it incorrectly Grin

Exactly part of what makes it all so confusing, yet understandable at the same time. Roll Eyes

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Reply #35 - Oct 2^nd, 2011 at 5:40pm

hyperpep111 Offline
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Club508 wrote on Oct 2^nd, 2011 at 5:33pm:

machineman9 wrote on Oct 2^nd, 2011 at 5:26pm:

Physics: Lots of it is theoretical, lots of it is assumed, but all it is relevant Wink

I've studied it at college for 3 years and I'm still amazed at how much they just guess and spoon-feed. If an old equation is in threat of being proved wrong, they usually invent a new subatomic particle (they're often undetectable!) or tell you that you've calculated it incorrectly Grin

Exactly part of what makes it all so confusing, yet understandable at the same time. Roll Eyes

Yes and that's how it is in almost everything. What you learn today might be false tomorrow. Conclusion...
School's irrelevant. Roll Eyes

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But we never know how in 1000 years we will change. It's all guesses. 1000 years ago. The earth was flat and was at the center of the universe and everything rotates round it. Grin

Most people think that flying a plane is dangerous, except pilots because they know how easy it is.
Arguing with a pilot is like wrestling with a pig in the mud, after a while you begin to think the pig likes it.

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Reply #36 - Oct 2^nd, 2011 at 9:27pm

H Offline
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Club508 wrote on Oct 2^nd, 2011 at 5:33pm:

If an old equation is in threat of being proved wrong, they... ...tell you that you've calculated it incorrectly.

To which you responded, "I know... I used your calculations." Um, I suppose you did not so respond...

Club508 wrote on Oct 2^nd, 2011 at 5:33pm:

machineman9 wrote on Oct 2^nd, 2011 at 5:26pm:

Physics: Lots of it is theoretical, lots of it is assumed, but all is relevant.
I've studied it at college for 3 years and I'm still amazed at how much they just guess and spoon-feed. If an old equation is in threat of being proved wrong, they usually invent a new subatomic particle (they're often undetectable!) or tell you that you've calculated it incorrectly.

Exactly part of what makes it all so confusing, yet understandable at the same time.

Sort of like a cathedral in a Sunday morning earthquake... "mass" confusion.

hyperpep111 wrote on Oct 2^nd, 2011 at 5:40pm:

But we never know how in 1000 years we will change. It's all guesses. 1000 years ago. The earth was flat and was at the center of the universe and everything rotates round it.

In a thousand years, a small planetiod speeds right at Earth... smacking one side flatter than a pancake (OK, more like convex)... but with a dirty aftertaste... all sorts of debris... rotating all around it... some of it revolving (except the Moon -- not wanting to be left out in the cold, it heads towords the Sun).

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Reply #37 - Oct 3^rd, 2011 at 2:07am

Webb Offline
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hyperpep111 wrote on Oct 2^nd, 2011 at 5:40pm:

But we never know how in 1000 years we will change. It's all guesses. 1000 years ago. The earth was flat and was at the center of the universe and everything rotates round it.

Pythagoras disproved the flat earth theory 2600 years ago.

The Copernican heliocentric theory was proposed 500 years ago.

There wasn't much scientific discovery going on in 1011.

A bad day at golf is better than a good day at work.

Jim

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Reply #38 - Oct 3^rd, 2011 at 3:45am

Hagar Offline
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machineman9 wrote on Oct 2^nd, 2011 at 5:26pm:

I've studied it at college for 3 years and I'm still amazed at how much they just guess and spoon-feed. If an old equation is in threat of being proved wrong, they usually invent a new subatomic particle (they're often undetectable!) or tell you that you've calculated it incorrectly Grin

I realised this 58 years ago during my first year at Grammar school. It made me the cynical old sod I am today. Cheesy

Quote:

There wasn't much scientific discovery going on in 1011.

Who is to say there will be in 3011? Wink

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Reply #39 - Oct 3^rd, 2011 at 3:53am

Fozzer Offline
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I discovered one of my missing socks under my bed, yesterday...

....!

Unfortunately, there wasn't anyone around at the time to verify it... Cry

...!

Paul...I'm always discovering lost things... Cool

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Reply #40 - Oct 4^th, 2011 at 9:29am

H Offline
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Fozzer wrote on Oct 3^rd, 2011 at 3:53am:

I discovered one of my missing socks under my bed, yesterday!
Unfortunately, there wasn't anyone around at the time to verify it...

This is usually when you become aware that its mate is now lost ...
or you're wearing it with another 'closely' matching orphan...

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Reply #41 - Oct 4^th, 2011 at 9:58am

ozzy72 Offline
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I remember getting into hot water at school when the psycho physics teacher (he actually had to leave after beating a girl unconcious with a lab stool) told us "Nothing is impossible!" and I asked him to demonstrate by nailing a jelly (jello for our American cousins) to a wall and striking a match on it Grin

He never really warmed to me after that......

There are two types of aeroplane, Spitfires and everything else that wishes it was a Spitfire!

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Reply #42 - Oct 4^th, 2011 at 11:32am

machineman9 Offline
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ozzy72 wrote on Oct 4^th, 2011 at 9:58am:

I remember getting into hot water at school when the psycho physics teacher (he actually had to leave after beating a girl unconcious with a lab stool) told us "Nothing is impossible!" and I asked him to demonstrate by nailing a jelly (jello for our American cousins) to a wall and striking a match on it Grin

He never really warmed to me after that......

Our chemistry teachers got in a bit of bother in the Jelly Baby experiment... It is where you put the jelly baby in a test tube alongside a chemical (potassium nitrate comes to mind, although that's probably a bit excessive. Who knows? I am a physicist, not a chemist!) and then put a bunsen burner under it. When it combusts, the jelly baby starts screaming.

Sadly, it flew out of the test tube (boiling at this point) and landed on the head of a student.

Good ol' days Grin

Perhaps if they knew that they could move faster than the speed of light, they'd've been okay Cool

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Reply #43 - Oct 4^th, 2011 at 3:59pm

eno Offline
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Give me a nice hot cup of tea and I'll make something that will pass through every point in the universe at the same time.... and anyway the answer is 42
.

Still haven't figured out the question yet ...... the Vogons are terminating the planet on the 21st of December next year so the white mice better hurry up and get this computer booted up properly before the Vogons get to us!!!!

Sanity ........ it's you lot that are insiane!!

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Reply #44 - Oct 5^th, 2011 at 4:49am

expat Offline
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ozzy72 wrote on Oct 4^th, 2011 at 9:58am:

I remember getting into hot water at school when the psycho physics teacher (he actually had to leave after beating a girl unconcious with a lab stool) told us "Nothing is impossible!" and I asked him to demonstrate by nailing a jelly (jello for our American cousins) to a wall and striking a match on it Grin

He never really warmed to me after that......

Now that little anecdote explains a lot about the Ozzy72....... Grin

Matt

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