Philosophical MagazineTaylor & Francis., 1898 - Physics |
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Page 166
Whilst by degrees the rarefaction was gradually being increased , the reflected pencil of rays became less and less distinct ; and near the surface of the reflector there could then be noted , especially by means of an opaque surface ...
Whilst by degrees the rarefaction was gradually being increased , the reflected pencil of rays became less and less distinct ; and near the surface of the reflector there could then be noted , especially by means of an opaque surface ...
Page 196
The focal length of a zone - plate is less for red light than for blue . The corresponding effect is shown in this figure . ( Stop F 22. ) Fig . 11. - Frequency 60 . In attempting to produce refraction of ripples many methods naturally ...
The focal length of a zone - plate is less for red light than for blue . The corresponding effect is shown in this figure . ( Stop F 22. ) Fig . 11. - Frequency 60 . In attempting to produce refraction of ripples many methods naturally ...
Page 521
This is due to the increase in the focal leugth to which I have alluded , and , other things being equal , would make the illumination less . The image obtained from the outer surface . of the plate is so faint that it is hardly ...
This is due to the increase in the focal leugth to which I have alluded , and , other things being equal , would make the illumination less . The image obtained from the outer surface . of the plate is so faint that it is hardly ...
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Contents
m FIFTH SERIES | 1 |
Mr W Sutherland on the Relative Motion of the Earth | 23 |
F Brush on the Transmission of Radiant Heat | 31 |
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