Songs in Easy English

• quantum physics
17794#20675 SBLNGS CHLDRN 20675

• Rich Burnett
#listening
17794#18204 SBLNGS CHLDRN 18204

○○○ wrap ⪢⪢
This is one of the fundamental questions of quantum physics and even Einstein had difficulty wrapping his brain around it.
17794#5927 SBLNGS CHLDRN 5927