Natural Philosophy Collection

*
Up BSHSdisplay » Copland's Apparatus Prev Next Slideshow

 Previous image  Next image  Index page
 
Kingstable
ABDNP200206a01
ABDNP200206a02
ABDNP201403a02
  ABDNP200393a01.jpg - Patrick Copland's Oscillating Prism Item 404 in Copland's inventory reads:  Whirling machine for showing composition of light from coloured rays £1.11.6  and is attributed to his personal collection.  This item is exactly that.  It performs a variant of Newton's crucial experiment. The prism forms a spectrum on the wall or screen.  When the handle is turned the spectrum moves back and forth and hence a point on the screen is subject to a rapidly changing illumination that is in fact a mixture of all spectral colours.  White light is then observed on the screen (with a little coloured fringing), showing that white light is indeed simply a mixture of spectral colours. ABDNP:200393a  
ABDNP200393a02
ABDNP200112a01
 
 
 

5 | Patrick Copland's Oscillating Prism

Item 404 in Copland's inventory reads: Whirling machine for showing composition of light from coloured rays £1.11.6 and is attributed to his personal collection. This item is exactly that. It performs a variant of Newton's crucial experiment. The prism forms a spectrum on the wall or screen. When the handle is turned the spectrum moves back and forth and hence a point on the screen is subject to a rapidly changing illumination that is in fact a mixture of all spectral colours. White light is then observed on the screen (with a little coloured fringing), showing that white light is indeed simply a mixture of spectral colours.

ABDNP:200393a

Image | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
Total images: 7 | Help