Statistics for occurrence #1 of “Tyndal” in chapter 5 of Knight's Mechanical Encyclopedia:
... diffused light in the room.
l is the electric lamp, the rays of which are focused at any desired point.
The apparatus is adapted for a large range of experiments, but in the figure is shown with Tyndal 's ray-filter c, in which the luminous rays are filtered out by passing the beam through an opaque solution of iodine in bisulphide of carbon, while the invisible heating or ultra-red rays are transmi...
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| † | Tyndal | 3 | 3 | 1 | 1 | 0 user votes | |
† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.