EngliSea
>
P
>
physics
>
quantum physics
•
quantum physics
17794#20675
SIBLINGS
CHILDREN
20675
Songs in Easy English
•
Rich Burnett
#listening
17794#18204
SIBLINGS
CHILDREN
18204
○○○
wrap
⪢⪢
This is one of the fundamental questions of quantum physics and even Einstein had difficulty wrapping his brain around it.
17794#5927
SIBLINGS
CHILDREN
5927
-