Brian Cox Explains Light Clocks and Time Dilation.

Brian Cox explains the concept of time dilation as per Einstein's theory of relativity. He describes how light clocks movement and the dimming of the light demonstrate the triangular pattern of a beam of light, illustrating Einstein's postulate that the speed of light is constant for all observers. He explains that a moving clock ticks more slowly than a stationary one.

#lightclock, #lightclocks, #briancox, #timetravel, #timedilation, #einstein, #specialrelativity

[shaneoneil]

It’s good to be reminded how dumb I am once in a while. Thank you.

[OriginalPuro]

Brian Cox is a fantastic person and physicist.
We are privileged to be able to watch him explain science.

[guiwhiz]

You have to be incredibly intelligent to explain something so complicated so simply I can understand it.

[davewatchedthat]

I managed to go to this presentation when he brought it to Edmonton. Incredible, he’s an unbelievably gifted teacher. If you ever get the chance to, go see him live. Loved it.

[Ruff_cutz]

I want to get this so bad but I just can’t 😂

[mackaytj]

While the stationary camera did show it moving in a triangular pattern, the ascent and decent of both still happened at the same speed. Jim was moving the light up and down, so the speed of the light never actually changed, just the observers view of it.

[Archie]

Oldie but goldie, although I wish the lecture was cut a little better for this clip, there were some great visuals that Cox showed that are helpful for understanding the concept better. It's hard to get all the relevant information in a short format. But either way, great job and keep it up. The more access, more people have to scientific information, the better.

[jonsmith]

I love this guy. He is 100% listening and understanding simply beautiful. Thank you for sharing the video.❤

[etherealstars]

A simple explanation of this: Remember that light has a MAXIMUM speed. Therefore, if the light that is in motion has a horizontal component, some percentage of its speed will be horizontal and some vertical. Therefore, the up-and-down speed of the light that has horizontal motion does not match the up-and-down speed of the light without horizontal motion.

[BMTroubleU]

Thats an interesting and novel representation. Its like a geometric proof of a physical law. A straight line up and down is a shorter path (faster movement in distance and time) than the triangular path.

[MuhammadThahaBLACKBLADE]

No-one in the earth explains better than prof. Brian cox

[tonynickels]

I could listen to this dude explain anything to me and it would be bliss. His calm demeanor is amazing:)

[britishs]

That is the best explanation that I have seen. Thank you for posting.

[ARockRaider]

Don't suppose i could get a link to the full lecture.

Cuz i have known about this theory for as long as i can remember (had a dictionary program back in the win95 days that had videos that I'd watch for fun, this problem was on there) and all i ever can get out of it is "well then your light operated clock isn't keeping time with the other guys clock, that doesn't mean the speed of time changes based on how fast you were going"

[krishogan]

Measurement of time only exists as a concept because we decided to start measuring it from our perspective.

[VTXrider]

Ive been trying to understand this concept since i first heard about i finally understand!! 😮

[JeffGoris]

I think the amazing thing about all this is that the speed of light is constant no matter the frame of reference. Whoever discovered that (Michelson & Morley) are underappreciated geniuses. What Einstein then says about special relativity is, as Brian says, obvious. It logically follows.

[TheOverThinkTank]

How about this. Time does not slow down. It's the light that slows down but only relative to the observer. The Observer also being governed by the speed of light also slows down. So it's their perception of time that slows not time itself.

[Nickdeaugustine]

The concept of Time Dilation tickles my brain and makes me feel like a kid in a cosmic candy store.

[JustAName-itqp]

If i was in this class, id be holding my chin, nodding my head, but thinking about Al Pastor tacos.