Thread: plzz answer

time is vector quantity or scalar bn y??????if scalar yy??
thanks 4 spending ur time

Originally Posted by Peacewanters007

time is vector quantity or scalar bn y??????if scalar yy??
thanks 4 spending ur time

it's a scalar quantity, since it does not show direction (i.e. you can't have negative time)

Originally Posted by Peacewanters007

time is vector quantity or scalar bn y??????if scalar yy??
thanks 4 spending ur time

At this level time would be considered a scalar quantity.

Originally Posted by mr fantastic

At this level time would be considered a scalar quantity.

"at this level"... that makes you sound so overly smart. i like to use that line when i'm tutoring precalc kids.

Student: what's the square root of -2?

Jhevon: at your level there is no square root of -2, hehehe

Originally Posted by Jhevon

"at this level"... that makes you sound so overly smart. i like to use that line when i'm tutoring precalc kids.

Student: what's the square root of -2?

Jhevon: at your level there is no square root of -2, hehehe

Indeed. A little knowledge can be a dangerous thing lol!

On the other hand, I always like to use the line as insurance against someone jumping in and saying "Hmpppph, well ...... it just so happens that ...."

And you never know .... one of those pre-calc kids might just otherwise come back in 10 yrs time and say "You rat, you liar. You told me .... and I believed you, man. I. Believed. You. sob ......"

Originally Posted by mr fantastic

Indeed. A little knowledge can be a dangerous thing lol!

On the other hand, I always like to use the line as insurance against someone jumping in and saying "Hmpppph, well ...... it just so happens that ...."

And you never know .... one of those pre-calc kids might just otherwise come back in 10 yrs time and say "You rat, you liar. You told me .... and I believed you, man. I. Believed. You. sob ......"

hehe, yeah, i know, that's how i'd feel. but i'd just tell them that's the way of the world. "hey, when i was in kindergarden, they told me i can't subtract a bigger number from a smaller one. now i do that everyday. how do you think that makes me feel?! suck it up and stop being a cry baby!"

anyway, at what "level" or in what context would time be a vector quantity?

Originally Posted by Jhevon

hehe, yeah, i know, that's how i'd feel. but i'd just tell them that's the way of the world. "hey, when i was in kindergarden, they told me i can't subtract a bigger number from a smaller one. now i do that everyday. how do you think that makes me feel?! suck it up and stop being a cry baby!"

anyway, at what "level" or in what context would time be a vector quantity?

I think our friendly neighbourhood quantum field theorist topsquark would be best qualified to show off *ahem* I mean give an answer to that ...... (But I'll put my 2 cents in if he passes)

Originally Posted by Jhevon

anyway, at what "level" or in what context would time be a vector quantity?

In a space time with more than one time like co-ordinate

RonL

Originally Posted by CaptainBlack

In a space time with more than one time like co-ordinate

RonL

And here I was just going to string things along for awhile ......

Actually there was a recent article in New Scientist (13 Oct 2007 pp 36-39) that might make accessible follow-up reading to CaptainBlack's answer. A Google search of two-time physics might also provide interest.

Time can be considered as a vector with positive direction pointing from past to future along the direction in which all senses follow. It is still difficult to find a negative time because no way our senses can observe in a direction against the above mentioned.
One might claim that I can run the video of a glass breaking in reverse to see it join back again --- thus I am seeing time go in negative direction. However, while the videotape is being run, time is going to flow from past to future.

No need for me to put my two cents in. Everything to be said has been said and said well.

-Dan