'Rainbow Cup' scientific toy
'Rainbow Cup' scientific toy, invented by Charles Vernon Boys, FRS, and patented in 1911
Details
- Category:
- Optics
- Object Number:
- 1973-253/1
- type:
- optical toy and educational toy
- credit:
- Wilson, G.B.L.
'Rainbow Cup' scientific toy, invented by Charles Vernon Boys, FRS, and patented in 1911