## hba 2 years ago Can any one tell me about tensor and phasor ?

1. hba

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.

2. hba

3. hba

@sauravshakya Yes ?

4. hba

@Callisto

5. UnkleRhaukus

um a tensor is a type of matrix

6. hba

7. Spectrum

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

8. hba

your'e*

9. Spectrum

rofl ty

10. Spectrum

you're* :)

11. hba

ty.

12. UnkleRhaukus

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

13. hba

Hmm.Thanks a lot @UnkleRhaukus :)

14. UnkleRhaukus

wikipedia tells me that a phasor is just a sinusoid

15. hba

Just a sinusoid ?

16. hba

Lemme check.

17. UnkleRhaukus

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

18. hba

a phasor or sinor is some sort of a sinusoid.

19. hba

I don't know what Spinor is though.

20. UnkleRhaukus

21. hba

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 :(

22. UnkleRhaukus

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

23. hba

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

24. Callisto

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

25. hba

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

26. hba

semester*

27. Callisto

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

28. Callisto

@hartnn Lifesaver :'(

29. hba

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

30. hartnn

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

31. hartnn

32. hartnn

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

33. hba

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

34. hartnn

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

35. hba

36. hba

@ajprincess Here

37. ajprincess

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

38. Raja99

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

39. hba

@experimentX Can you help ?

40. experimentX

scalar is a tensor of rank zero

41. experimentX

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

42. hba

43. experimentX

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

44. hba

Hmm,Thanks a lot :)

45. experimentX

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

46. hba

No worries c:

47. UnkleRhaukus

so tensors are always square matrices?