...spectrum : — Ultra-red Extreme red Orange .. Yellow Green Blue Indigo Violet Ultra-violet loo 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 refrangibilit) cannot be split up into two rays, one being heat and one light. Take, for instance,...

...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...

...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...

...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...

...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...

...with those usually given in 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...

...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...

...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...

...ultra-violet. Then comes the momentous question, " Is the effect due to heat or light ? " It is noted that " there is no real difference between heat and light ; all we can take account of is difference of wave length ; and a ray of different refrangibility cannot be split up into two rays, one being heat...

...fear of misrepresentation, I must give in Dr. Carpenter's own words : — " After pointing out that ' there is no real difference between heat and light, all we can take account of [I presume he means physically, not physiologically] being difference ot wave-length,' he [Mr. Crookes...