Light, Visible and Invisible |
From inside the book
Results 1-3 of 14
Page 65
... telescope , however , we can easily make out an angle of one second of arc . Double stars whose angular separation is in that order are there- fore called telescopic double stars . Of course , there are double stars that are so close ...
... telescope , however , we can easily make out an angle of one second of arc . Double stars whose angular separation is in that order are there- fore called telescopic double stars . Of course , there are double stars that are so close ...
Page 66
... telescope does pick up more light , magnification causes this light to be dis- tributed over a larger surface on the retina . This is why we can see fixed stars through a telescope even in the daytime : the stars appear brighter than ...
... telescope does pick up more light , magnification causes this light to be dis- tributed over a larger surface on the retina . This is why we can see fixed stars through a telescope even in the daytime : the stars appear brighter than ...
Page 67
... telescope be put to full use . To resolve 1/100 second of arc , we would need a tele- scope with an objective of at least 480 inches diameter , and 6,000 - fold magnification ! The opening of the biggest reflector telescope in the world ...
... telescope be put to full use . To resolve 1/100 second of arc , we would need a tele- scope with an objective of at least 480 inches diameter , and 6,000 - fold magnification ! The opening of the biggest reflector telescope in the world ...
Contents
Introduction | 15 |
Light Waves a Useful Fiction | 23 |
Applications of Interference | 60 |
Copyright | |
8 other sections not shown
Other editions - View all
Common terms and phrases
atoms bands beam blue carbon disulfide color dark deviated diffraction direction disk distance Doppler effect double refraction double star electric field electric waves electromagnetic waves electrons elementary waves emitted energy exciter experiment fluorescence Fraunhofer lines frequency glass plate grating green inch infrared light infrared radiation instance invisible lamp layer lens light sources light waves liquid long-waved luminous magnetic field measure metal mica microscope mirror object observed opaque ordinary light oscillators parallel particles path difference photograph plane polarized light polarizing angle prism produce propagation red light refractive index right angles screen short-waved shown in Figure shows slit sodium solar source of light space spectral lines spectroscopic spectrum speed of light spot substance sunlight surface telescope temperature tion total reflection transmitted transparent transverse waves tube vapor velocity vibrations violet light visible light wave length wave theory white light X rays yellow Zeeman effect