I never understood why light has momentum but no mass.. until now!
![](https://i.ytimg.com/vi/PdN1mweN2ds/mqdefault.jpg)
15:59
I never understood why electrons have spin... until now!
![](https://i.ytimg.com/vi/wiBsfvW5AWY/mqdefault.jpg)
21:58
I never understood why light has ENERGY but NO MASS... until now!
![](https://i.ytimg.com/vi/KTzGBJPuJwM/mqdefault.jpg)
29:24
Işık neden "yavaşlayabilir" ve neden renge bağlıdır | Optik bulmacalar 3
![](https://i.ytimg.com/vi/AL2Chc6p_Kk/mqdefault.jpg)
18:35
The Most Mind-Blowing Aspect of Circular Motion
![](https://i.ytimg.com/vi/0kY3Wpvutfs/mqdefault.jpg)
30:36
Physics Students Need to Know These 5 Methods for Differential Equations
![](https://i.ytimg.com/vi/SDtAh9IwG-I/mqdefault.jpg)
20:34
How big is a visible photon?
![](https://i.ytimg.com/vi/M--6_0F62pQ/mqdefault.jpg)
32:50
I never intuitively understood atomic orbitals...until now!
![](https://i.ytimg.com/vi/3KePcASD0NQ/mqdefault.jpg)
18:35