Relativity 2- finding the (special) theory

More nerdliness for my own enjoyment - almost beats making a NephilimFree pwnage vid. Here we derive the fundamental results of special relativity using (for the most part) pictures.

My physics playlist: http://www.youtube.com/view_play_list?p=7B0D5AF68906CEFF

Category:

Education

Tags:

• special
• relativity
• ozmoroid
• einstein
• minkowski
• physics

[robman8855]

sorry another question :P.. at 7:08 why is V considered the same in all four equations. like why is the Latin perception of the greeks' V the same as the greek perception of the Latins' V?

[ozmoroid]

@robman8855 We know the velocities are the same in the low velocity limit (Galilean relativity = day-to-day experience). That takes care of the 1st and 3rd equations. For the 2nd and 4th equations it has to be the same v to make the speed of light be the same in both systems. 

[robman8855]

same at 7:30, it seems to me that according to the Latin reference point that the distance that the event is away from the origin would be the greeks' observed distance plus the greeks' velocity (as obsever by the Latins) multiplied by the time (as observed by the Latins. I am confused why you use the greek time for the Latin's distance and vice versa.

Maybe it doesn't even matter who knows

[ozmoroid]

@robman8855 The equations are written so that you can take Greek/Latin coordinates and translate them to Latin/Greek. xi = x-vt allows the Latin observer to take his coordinates (t,x) of an event and predict the Greek xi value.

[robman8855]

at 2:56 in the equation for x, why are you using the moving graphs perception of time rather than the stationary one's variable for time?

[ozmoroid]

@robman8855 In this case t and tau are the same. Using tau in the equations just makes it have Latin on the left, Greek on the right.

[Lbbhecht]

This series is possibly the best collection of science videos I have seen on Youtube.

[ozmoroid]

@adapaevolved Apparently you can't keep track of which videos you comment on. This is #2. You were dumping comments on #3. Those are very much (unfortunately) still there. I'd never censor someone like you. Scientific illiteracy of that magnitude is just too amazing to behold. ;-)

[robman8855]

@ozmoroid thank you for the answers.. Your videos are very interesting and helpful however it isn't the same as someone explaining it to you in person. But this is as close as I can get to an in-person explanation so thank you very much!

[adapaevolved]

if I'm illiterate,draw a space-time diagram for the box and the light beam,your light beam is falling faster than the box,it follows a curved path,the box a straight,same frame of reference?

[adapaevolved]

You delete my objection? Pathetic.

Nice scientific discourse, trough censorship.