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**Milos****Member**- Registered: 2005-05-06
- Posts: 44

Roraborealis wrote:

When you say "time," what do you mean? I understand how space can be dragged into a hole, but I don't understand how time, the thing that passes us for ever, can.

Physics of Time

Einsteins first major contribution to the study of time occurred in 1905, when he introduced his special theory of relativity and showed how time changes with motion. The word relativity derives from the fact that the appearance of the world depends on the observers state of motion and is relative to the observer. Today scientists do not see problems of time or motion as absolute with single correct answers. Because time is relative to the speed an observer is traveling, there can never be a clock at the center of the universe to which everyone can set his or her watch. Einsteins special theory of relativity tell us that an object traveling at high speeds ages more slowly than an object that is not traveling as fast. This means that if a person from Earth were to travel in outer space at a speed close to the speed of light (about 300,000 km per sec or about 186,000 mi per sec), that person could return to Earth thousands of years into Earths future.

Time is distorted in regions of large masses, such as stars and black holes. In Einsteins general theory of relativity, which was introduced in 1916, the very existence of time depends on the presence of space. Einsteins general theory explains how gravity warps and slows time and why time moves very slightly slower in regions of high gravity, such as near stars, compared to regions of lesser gravity, such as on planets. This time-slowing effect becomes pronounced in regions of extremely high gravity, such as near black holes.

Contributed By:

Clifford A. Pickover

*Last edited by Milos (2005-05-09 07:36:41)*

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**Roraborealis****Member**- Registered: 2005-03-17
- Posts: 1,594

I am inspired! I think I am obsessed with space!

School is practice for the future. Practice makes perfect. But - nobody's perfect, so why practice?

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**stewie****Member**- Registered: 2005-03-28
- Posts: 820

Don't get too excited, it's educational.

HAPPY HAPPY, JOY JOY

Fatboy Slim is the band of the 90s, thats if you want to call it a band because its really a one man name

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**Roraborealis****Member**- Registered: 2005-03-17
- Posts: 1,594

Take it you don't like learning.

School is practice for the future. Practice makes perfect. But - nobody's perfect, so why practice?

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**stewie****Member**- Registered: 2005-03-28
- Posts: 820

No one likes learning.

Me fail english? That's unpossible!

HAPPY HAPPY, JOY JOY

Fatboy Slim is the band of the 90s, thats if you want to call it a band because its really a one man name

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**Zach****Member**- Registered: 2005-03-23
- Posts: 2,075

I like learning how to drive a cheese.

Boy let me tell you what:

I bet you didn't know it, but I'm a fiddle player too.

And if you'd care to take a dare, I'll make a bet with you.

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**Roraborealis****Member**- Registered: 2005-03-17
- Posts: 1,594

I never did nothing and I hate sheep's.

School is practice for the future. Practice makes perfect. But - nobody's perfect, so why practice?

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,713

Was that a Sheep-*Ovis* joke?

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

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**Roraborealis****Member**- Registered: 2005-03-17
- Posts: 1,594

Um, no! Just contributing to the nonsense fashion!

School is practice for the future. Practice makes perfect. But - nobody's perfect, so why practice?

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**mathsyperson****Moderator**- Registered: 2005-06-22
- Posts: 4,900

We are all slaves to the DENTURE koala and his army of light-bulbs with feet.

Why did the vector cross the road?

It wanted to be normal.

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**Roraborealis****Member**- Registered: 2005-03-17
- Posts: 1,594

I've got an idea! Why don't we start a game or something, where somebody says a word, like "The," and then somone else says another word, but it must make sense. The next person adds another word, and so on.....

YOu could end up with something really funny like:

The tins were stacked and piled for the summer heat and then the people decided to put them away so they did that and then ran away with ganesh's pet ferrets because they wanted to. My foot, which hurts badly, fell off the moon...........

School is practice for the future. Practice makes perfect. But - nobody's perfect, so why practice?

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**mathsyperson****Moderator**- Registered: 2005-06-22
- Posts: 4,900

OK! I'll start us off with a nice, open-minded...

The

Why did the vector cross the road?

It wanted to be normal.

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**Roraborealis****Member**- Registered: 2005-03-17
- Posts: 1,594

The green.....

School is practice for the future. Practice makes perfect. But - nobody's perfect, so why practice?

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**mathsyperson****Moderator**- Registered: 2005-06-22
- Posts: 4,900

The green, splendid...

Why did the vector cross the road?

It wanted to be normal.

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**Roraborealis****Member**- Registered: 2005-03-17
- Posts: 1,594

The green, splendid paper.....

School is practice for the future. Practice makes perfect. But - nobody's perfect, so why practice?

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**mathsyperson****Moderator**- Registered: 2005-06-22
- Posts: 4,900

The green, splendid paper plane...

Why did the vector cross the road?

It wanted to be normal.

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,713

The green, splendid paper plane flew ...

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

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**mathsyperson****Moderator**- Registered: 2005-06-22
- Posts: 4,900

The green, splendid paper plane flew slowly...

Why did the vector cross the road?

It wanted to be normal.

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**im really bored****Member**- Registered: 2005-05-12
- Posts: 76

The green, splendid paper plane flew slowly underneath ...

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**mathsyperson****Moderator**- Registered: 2005-06-22
- Posts: 4,900

The green, splendid paper plane flew slowly underneath the...

Why did the vector cross the road?

It wanted to be normal.

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**Jai Ganesh****Administrator**- Registered: 2005-06-28
- Posts: 47,717

The green, splendid paper plane flew slowly underneath the roof...

It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,713

The green, splendid paper plane flew slowly underneath the roof that ...

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

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**mathsyperson****Moderator**- Registered: 2005-06-22
- Posts: 4,900

The green, splendid paper plane flew slowly underneath the roof that was...

Why did the vector cross the road?

It wanted to be normal.

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**Roraborealis****Member**- Registered: 2005-03-17
- Posts: 1,594

The green, splendid paper plane flew slowly underneath the roof that was actually.....

School is practice for the future. Practice makes perfect. But - nobody's perfect, so why practice?

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,713

The green, splendid paper plane flew slowly underneath the roof that was actually supported ...

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