Lec 3 | MIT 8.03 Vibrations and Waves, Fall 2004

[612samhurst]

is there an egg on your shirt?? :-S

[TammieRemakr356]

ha bin ne sau

[pepteamsergi09]

wow!! just a taste Why foreigners succeed....

[agapitoflores001]

Great! This is exeptional.

[mdgreg]

I Needed to Have this Lecture Repeated, it Further Firms Up my "Feel" for Thing With the Math, Thanks.

[ExperimentLife]

Wow, ap high school physics isnt any harder....

[d09000814]

now i know the the resonance frequency of my eardrum. 56:23

[nivu007]

y is the chalk cuboid in shape??

[dtenev2]

1:08:00 to the end

[samuseless92]

awesum...

[samuseless92]

awesum...

[joeglimmix]

sohcahtoa is tattooed on my arm

[skagnfka]

is delta a hyperbolic tangent function?

[ibreakkidslegs]

he did actually... cos(theta) ~ 1, and sin(theta) ~ (x-eta)/L

[shim2dawg]

how does he make those dotted lines!?

[udai4k]

@shim2dawg its simple hold the chalk in obtuse angle instead on acute angle b/w chalk and board surface and push it in a line type u need it (straight line is easier) hope u got it

[pandamasterabcd]

@shim2dawg once my teacher taught me how to do those dotted lines.... i'm not sure if i can explain it properly in english... but i'll try. You just have to hold the chalk firmly at the tip, or at least near the tip (by tip i mean the extreme opposite to the point that is actually touching the blackboard), and then slide the chalk fast and hard in the direction you want to draw the dotted line. One thing that helps is that the tip that is touching the board should be as flat as possible...

[Ferragusplaton]

The Mythbusters already show that the human voice can reach the ressonance of a glass and break it. It must have been after this lecture... :P

[jacksmidway]

Very impressed with this lecture series. Vibrations would not make sense to me without Walter.

[mamatalu]

Prof. Lewin is awesome. He explains stuff very well!

[randompast]

z = Ae^(j(wt-d)), great substitution! This has to be the best derivation I've yet seen for driven oscillatory motion. Thanks MIT! This really helps.

[landin048]

Walter Lewen teaches you to always be aware of an infinite number of impossibilities as well as known possibilities and those which may not yet be known. This is not a robot factory. It's a probability factory.

[sn1pe352]

Needs a little more conceptual teachings and demonstrations , but hey it's a robot factory anyway

Even still Walter Lewin is amazing ..even though he teaches too many impossibilities