"Every perception is to some degree an act of creation, and every act of memory is to some degree an act of imagination."
-- Gerald Edelman, Second Nature: Brain Science and Human Knowledge
1 Of violent Motion1 Of Reflection undulation - refraction.The Newton Project Knowledge Graph2020-10-08Journal1 Of Reflection undulation - refraction.
Why refraction is less in hot water than cold
If a peice of silver be boyled (that is bee first brushed & then decocted with salt & tartar & perhaps other ingredients it will looke very white, but burnish it with a peice of steele & it will be a perfect speculum.
Whither the backsid of a cleare glas reflect light in vacuo
Since there is refraction in vacuo as in the aire it follows that the same subtile matter in the aire & in vacuo causeth refraction
Try Whither Glasse hath the same refraction in Mr Boyles Receiver, the aire being drawn out, which it hath in the open aire.
1 Of Reflection undulation - refraction.