Can any one tell me about tensor and phasor ?

Question

hba · Answer

I studied in high school  that there are four types of measuring quantities

1)Scalar

2)Vector

3)Phasor

4)Tensor


I studied about Scalar and vector in great detail,but,i did not get to know about Phasor and Tensor.

hba · Answer

@UnkleRhaukus 

Please tell me :)

hba · Answer

@sauravshakya   Yes ?

hba · Answer

@Callisto

unklerhaukus · Answer

um a tensor is a type of matrix

hba · Answer

Hmm.

What about phasor ?

anonymous · Answer

tensor- how i get before a test 
phasor- star trek weapon can be turned up to lethal or stunning strength 
your welcome <3

hba · Answer

your'e*

anonymous · Answer

rofl
ty

anonymous · Answer

you're* :)

hba · Answer

ty.

unklerhaukus · Answer

i dont know about phasors, but i have also heard of spinors

hba · Answer

Hmm.Thanks a lot @UnkleRhaukus  :)

unklerhaukus · Answer

wikipedia tells me that a phasor is just a sinusoid

hba · Answer

Just a sinusoid ?

hba · Answer

Lemme check.

unklerhaukus · Answer

i would like to know the difference between a spinor and a tensor (they are some kinda matrix) , but my studies havent brought me to that level yet

hba · Answer

a phasor or sinor is some sort of a sinusoid.

hba · Answer

I don't know what Spinor is though.

unklerhaukus · Answer

hmm what about Twistors?

hba · Answer

Well,I have just completed high school,So you cannot expect that from me lol :P


Spinors,twistors and quaternion are something i have not studied yet :(

unklerhaukus · Answer

they look a bit scary to me ,
 but i aim to one day have a deep understanding of these concepts ,
one day

hba · Answer

I also hope to have an understanding about them one day :)

@Callisto 

Can you help us ?

callisto · Answer

@hba Note that I'm just at the same level as you. How am I supposed to know that?

hba · Answer

@Callisto 

I have not joined Uni yet and you are done with a whole semster.

hba · Answer

semester*

callisto · Answer

I'm sorry. I took the calculus course in the first semester, haven't taken the linear algebra yet.

callisto · Answer

@hartnn Lifesaver :'(

hba · Answer

@hartnn 

Tell me about Phasor and tensor((they are some kinda matrix)  ?

hartnn · Answer

phasor is just a phase vector,
like $A \sin (\omega \theta)$ is a phasor, 
one which has amplitude, frequency and phase.

hartnn · Answer

don't know much about tensors.....

hartnn · Answer

i meant $A \sin (\omega t +\theta)$
as phasor....

hba · Answer

Um,I read something like this from Wiki.

Can you tell me something more ?

hartnn · Answer

i can't tell you more than wiki :P
this was never taught to me...

hba · Answer

I will just go to my professor and ask him about this,

Thanks a lot for helping.

hba · Answer

@ajprincess Here

ajprincess · Answer

Really sorry @hba. I too have no idea:( Guess they will be teachng me these in my second yr.

anonymous · Answer

All the above three quantities are one and same..in the sense all represents physical quantities

hba · Answer

@experimentX 

Can you help ?

experimentx · Answer

scalar is a tensor of rank zero

experimentx · Answer

vector is a tensor of rank 1 here is a better explanation http://mathforum.org/library/drmath/view/51503.html

hba · Answer

What about Phasor ?

experimentx · Answer

I am not sure about phasor, at least it's not a vector according to wikipedia

hba · Answer

Hmm,Thanks a  lot :)

experimentx · Answer

sorry I don't have much experience in tensor calculus.

hba · Answer

No worries c:

unklerhaukus · Answer

so tensors are always square matrices?