 | 1876 - 630 páginas
...figures with those usually given in text-books to represent the distribution of heat in the «peurum, is a sufficient proof that the mechanical action of...light ?" There is no real difference between heat »nd light ; all we can take account of is difference of wave-length, and a ray of a definite refrangibility... | |
 | 1876 - 298 páginas
...Ultra-red . . . . . . Extreme red Orange Yellow Green Blue Indigo Violet Ultra-violet 100 85 73 66 57 41 22 8J 6 5 A comparison of these figures with...difference of wave-length, and a ray of a definite refrangibility cannot be split up into two rays, one being heat and one light. Take, for instance,... | |
 | 1877 - 316 páginas
...with those usually given n text-books to represent the distribution of heat in the spectrum will be a sufficient proof that the mechanical action of radiation...the luminous rays as it is of the dark heat-rays. 194. In the intervals of spectrum work I tried many other experiments with the apparatus. I was anxious... | |
 | Royal Society (Great Britain) - 1876 - 818 páginas
...Ultra-red 100 Extreme red 85 Bed 73 Orange 66 Yellow 57 Green 41 Blue 22 Indigo 8j| Violet 6 Ultra-violet 5 A comparison of these figures with those usually...difference of wave-length ; and a ray of a definite refrangibility cannot be split up into two rays, one being heat and one light. Take, for instance,... | |
 | 1876 - 802 páginas
...Yellow . 57 Green 41 Blue 22 Indigo 8} Violet 6 Ultra-violet ........... 5 A comparison of these figures is a sufficient proof that the mechanical action of...luminous rays as it is of the dark heat-rays. The second question — namely, " What influence has the color of the surface on the action ? " has also... | |
 | James Samuelson, William Crookes - 1876 - 606 páginas
...Orange 66 Yellow 57 Green 41 Blue 22 Indigo SiViolet 6 Ultra-violet 5 A comparison of these figures is a sufficient proof that the mechanical action of...luminous rays as it is of the dark heat-rays. The second question, namely, " What influence has the colour of the surface on the action ? " has also... | |
 | Radiometer - 1876 - 56 páginas
...Orange 66 Yellow 57 Green 41 Blue 22 Indigo 8J Violet 6 Ultra-violet 5 A comparison of these figures is a sufficient proof that the mechanical action of...the luminous rays as it is of the dark heat-rays. CHAPTER III. APPLICATION OF THE ACTION OF RADIATION TO PHOTOMETRY. ascertain what influence the colour... | |
 | 1877 - 748 páginas
...immediate mechanical effect produced by radiation, Mr. Crookes thus expressed himself in regard to it : " There is no real difference between heat and light...difference of wave-length, and a ray of a definite refrangibility cannot be split up into two rays, one being heat and one light. Take, for instance,... | |
 | 1877 - 608 páginas
...spearum happens to be capable of affedmg the retina of the human eye. There is no real distinction between heat and light; all we can take account of is difference of wave-length; and all we can see in the spearum is one continuous series of vibrations, longer at the red end than at... | |
 | John Henry Pepper - 1877 - 764 páginas
...the spectrum happens to be capable of affecting the retina of the eye. There is no real distinction between heat and light : all we can take account of is difference of wave-length ; and all we can see in the spectrum is one continuous series of vibrations, larger at the red end than at... | |
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... ultra-red, and the minimum in the ultra-violet. Taking the maximum at 100, the following are the mechanical values of the different colours of the spectrum : — Ultra-red 100 Extreme red 85... 
