Word: visular
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...will be formed by using a lens in connection with the other apparatus. This will give a light one hundred times as bright as that in the simpler instrument. By means of this same device, the relative brightness of the different stars and planets will also be obtained. The visular comparative brilliancy has already been well ascertained by astronomers, but their comparative brightness for photographic work is not accurately known...
| 1 |