Radiation, Light and Illumination Visual Map

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Promoted Original Crops

rli-fig-14-spectrum-of-radiation

Radiation, Light and Illumination, printed page 18, Fig. 14

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radiation-light-and-illumination-fig-015-original-crop

Radiation, Light and Illumination, printed page 22, PDF page 42; Fig. 15

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radiation-light-and-illumination-fig-018-original-crop

Radiation, Light and Illumination, printed page 28, PDF page 48; Fig. 18

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radiation-light-and-illumination-fig-019-original-crop

Radiation, Light and Illumination, printed page 29, PDF page 49; Fig. 19

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radiation-light-and-illumination-spectrum-table-original-crop

Radiation, Light and Illumination, printed page 17, PDF page 37; Spectrum of Radiation table preceding Fig. 14

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Modern Guide Diagrams Keyed To This Source

Spectrum Of Radiation

Modern navigation guide for Steinmetz’s electric-wave, visible-light, ultraviolet, and X-ray spectrum bridge.

radiation, electric-waves, frequency, spectrum, ether

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Illumination Inverse-Square Geometry

Modern guide for the practical bridge from radiation to visual illumination and light distribution.

illumination, radiation, light-flux, inverse-square

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Candidate Figure References

Candidate	Caption lead	Section	Routes
radiation-light-and-illumination-fig-001 Fig. 1	tion, the time at which the moon M should disappear from sight, FIG. 1. when seen from the earth E, by passing behind Jupiter, 7 (Fig. 1), could be exactly calculated. It was found, however, that some-	Lecture 1: Nature And Different Forms Of Radiation	source workbench
radiation-light-and-illumination-fig-002 Fig. 2	5_MOE_S FIG. 2. direction the light reappears. If the disk is slowly revolved, alter- nate light and darkness will be observed, but when the speed in-	Lecture 1: Nature And Different Forms Of Radiation	source workbench
radiation-light-and-illumination-fig-003 Fig. 3	from the upper surface of the plain glass plate A. A beam of FIG. 3. reflected light a, thus is a combination of a beam b and a beam c.	Lecture 1: Nature And Different Forms Of Radiation	source workbench
radiation-light-and-illumination-fig-004 Fig. 4	glass plates. At those points dv dv etc. at which the distance FIG. 4. between the two glass plates is J wave length, or j, J, etc., the	Lecture 1: Nature And Different Forms Of Radiation	source workbench
radiation-light-and-illumination-fig-005 Fig. 5	etc. in the plane of the paper, and thus perpendicular to the ray FIG. 5. of light. In the former case (a longitudinal vibration, as sound) there obviously can be no difference between the directions at	Lecture 1: Nature And Different Forms Of Radiation	source workbench
radiation-light-and-illumination-fig-009 Fig. 9	it to you, by bringing the rods near to this Crookes’ radiometer, FIG. 9. which is an instrument showing the energy of radiation. It con- sists (Fig. 10) of four aluminum vanes, mounted in a moderately	Lecture 1: Nature And Different Forms Of Radiation	source workbench
radiation-light-and-illumination-fig-010 Fig. 10	(red, orange and yellow) with increase in temperature, the light FIG. 10. 12	Lecture 1: Nature And Different Forms Of Radiation	source workbench
radiation-light-and-illumination-fig-011 Fig. 11	of the lower frequencies of visible radiation, red or orange. FIG. 11. In the tungsten lamp at high brilliancy and more still in the	Lecture 1: Nature And Different Forms Of Radiation	source workbench
radiation-light-and-illumination-fig-012 Fig. 12	They are used in wireless telegraphy, etc. I here connect (Fig. 12) FIG. 12. the condenser C of the apparatus which I used for operating the ultra-violet arc, to a spark gap Gv of which the one side is con-	Lecture 1: Nature And Different Forms Of Radiation	source workbench
radiation-light-and-illumination-fig-013 Fig. 13	o — ^^ — o FIG. 13. has been measured by Herz by producing standing waves by combination of main wave and reflected wave.	Lecture 1: Nature And Different Forms Of Radiation	source workbench
radiation-light-and-illumination-fig-014 Fig. 14	as far as possible when producing light, as they consume power FIG. 14. and so lower the efficiency; the ultra-violet rays are of importance in medicine as germ killers. They are more or less destructive	Lecture 1: Nature And Different Forms Of Radiation	source workbench
radiation-light-and-illumination-fig-015 Fig. 15	edge of the beam reaches the boundary at D its speed changes FIG. 15. by entering the medium W — decreases in the present instance. Let then Sl = speed of propagation in medium A, S2 = speed of	Lecture 2: Relation Of Bodies To Radiation	source workbench
radiation-light-and-illumination-fig-016 Fig. 16	medium into another, and the higher frequencies are deflected FIG. 16. more than the lower frequencies, thus showing that the velocity of propagation decreases with an increase of frequency, that is,	Lecture 2: Relation Of Bodies To Radiation	source workbench
radiation-light-and-illumination-fig-017 Fig. 17	VIOLET FIG. 17. a number of very faint red and orange lines, of which three are indicated dotted in Fig. 17.	Lecture 2: Relation Of Bodies To Radiation	source workbench
radiation-light-and-illumination-fig-018 Fig. 18	perature rise, their brilliancy is greatly increased. FIG. 18. Combinations of the different types of spectra: continuous spectrum, line spectrum, band spectrum, reversed spectrum,	Lecture 2: Relation Of Bodies To Radiation	source workbench
radiation-light-and-illumination-fig-019 Fig. 19	and the body thus acts as a mirror, that is, gives a virtual image FIG. 19. back of it as shown in dotted line in Fig. 18. In the latter case (Fig. 19) the light is reflected irregularly in all directions.	Lecture 2: Relation Of Bodies To Radiation	source workbench
radiation-light-and-illumination-fig-021 Fig. 21	VIOLET FIG. 21. in the ultra-red and ultra-violet, where no power of radiation can produce visibility. It thus varies about as indicated in Fig. 22.	Lecture 3: Physiological Effects Of Radiation	source workbench
radiation-light-and-illumination-fig-022 Fig. 22	the basis of equal ease in distinguishing objects. As the pur- FIG. 22. pose for which light is used is to distinguish objects, the correct comparison of lights obviously is on the basis of equal distinctness	Lecture 3: Physiological Effects Of Radiation	source workbench
radiation-light-and-illumination-fig-023 Fig. 23	v FIG. 23. meter candles (or rather log i) as abscissas, for red light, wave length 65.0; orange yellow light, wave length 59; bluish green	Lecture 3: Physiological Effects Of Radiation	source workbench
radiation-light-and-illumination-fig-024 Fig. 24	\ FIG. 24. (1 meter-candle is the illumination produced by 1 candle power	Lecture 3: Physiological Effects Of Radiation	source workbench
radiation-light-and-illumination-fig-025 Fig. 25	S FIG. 25. 62 for high intensities and changes in approximately the same range of intensities in which lwo changes; ks is also plotted in	Lecture 3: Physiological Effects Of Radiation	source workbench
radiation-light-and-illumination-fig-026 Fig. 26	YELLOW GREEN FIG. 26. carbon filament would be somewhat like C. That is, the physio-	Lecture 3: Physiological Effects Of Radiation	source workbench
radiation-light-and-illumination-fig-027 Fig. 27	fore, increase enormously with the increase of temperature. FIG. 27. With bodies in a vacuum, the radiation power is the power input and this above law can be used to calculate the tempera-	Lecture 5: Temperature Radiation	source workbench
radiation-light-and-illumination-fig-028 Fig. 28	weight, exhibit a periodicity in their properties which permits FIG. 28. a systematic study of their properties. In diagram Fig. 28 the	Lecture 5: Temperature Radiation	source workbench
radiation-light-and-illumination-fig-029 Fig. 29	\\ FIG. 29. power required to maintain the temperature is correspondingly less, hence the efficiency is the same and merely a larger radiator	Lecture 5: Temperature Radiation	source workbench
radiation-light-and-illumination-fig-030 Fig. 30	where colored radiation or luminescence is present. Thus the FIG. 30. radiation given by the interior of a closed body of uniform tem- perature ceases to be black body radiation if the interior is filled	Lecture 5: Temperature Radiation	source workbench
radiation-light-and-illumination-fig-031 Fig. 31	one, the other from the other terminal. They are stationary FIG. 31. only if the gas pressure is perfectly constant, but separate and contract with the slightest change of pressure, hence are almost	Lecture 6: Luminescence	source workbench
radiation-light-and-illumination-fig-032 Fig. 32	II II FIG. 32. decreasing gas pressure the voltage consumed in the space be-	Lecture 6: Luminescence	source workbench
radiation-light-and-illumination-fig-033 Fig. 33	and you see the striated Geissler discharge through mercury FIG. 33. vapor appear between terminals 2 and 3, giving the green light> of the mercury spectrum. The terminals are quiet, as they do	Lecture 6: Luminescence	source workbench
radiation-light-and-illumination-fig-034 Fig. 34	3J=10 OHMS FIG. 34. and the spectrum of the arc is the spectrum of the negative ter- minal. An exception herefrom, occurs only in those cases in	Lecture 6: Luminescence	source workbench
radiation-light-and-illumination-fig-035 Fig. 35	tendency exists of shifting the starting point, and the arc becomes FIG. 35. LUMINESCENCE.	Lecture 6: Luminescence	source workbench
radiation-light-and-illumination-fig-036 Fig. 36	lished by the vapor stream coming from the negative. Thus the FIG. 36. arc can be started by merely starting a conducting vapor stream from the negative, as by an auxiliary arc. As soon as this con-	Lecture 6: Luminescence	source workbench
radiation-light-and-illumination-fig-037 Fig. 37	draw it out until the arc flame wraps itself all around terminal FIG. 37. B} but the arc does not transfer. I even insert 10 ohms resist- ance rl in series with C (Fig. 37), so that the voltage AB is about	Lecture 6: Luminescence	source workbench
radiation-light-and-illumination-fig-038 Fig. 38	ws FIG. 38. negative, that is, at a higher potential difference and a shorter distance against A than B is. I even hold C for some time in	Lecture 6: Luminescence	source workbench
radiation-light-and-illumination-fig-039 Fig. 39	MAA FIG. 39. current during one half-wave only, but no current at all dur- ing .the other. I show you this experimentally, using 50 volts	Lecture 6: Luminescence	source workbench
radiation-light-and-illumination-fig-040 Fig. 40	60 CYCLES FIG. 40. terminals. The cause is obvious: to maintain an arc between	Lecture 6: Luminescence	source workbench
radiation-light-and-illumination-fig-041 Fig. 41	and thereby increasing radiation, etc. For a 13-mm. (0.5-in.) FIG. 41. arc it is approximately shown as Curve II in Fig. 41 : 20 volts	Lecture 6: Luminescence	source workbench
radiation-light-and-illumination-fig-043 Fig. 43	cannot freely condense, the mercury vapor pressure rises and FIG. 43. presses the mercury level down in the center tubes, up in the outside tubes, as indicated at b in Fig. 43, and thereby	Lecture 6: Luminescence	source workbench
radiation-light-and-illumination-fig-044 Fig. 44	*m FIG. 44. to a bright pinkish-red arc, and the spectroscope shows that the spectrum lines in the red and orange have greatly increased in	Lecture 6: Luminescence	source workbench
radiation-light-and-illumination-fig-045 Fig. 45	1 0 FIG. 45. arc length, I, we get tor every value of current, i, a practically straight line, as shown for the magnetite arc in Fig. 45, for values	Lecture 8: Arc Lamps And Arc Lighting	source workbench
radiation-light-and-illumination-fig-047 Fig. 47	1J5 IN. FIG. 47. lengths, however, the observed values of voltage drop below the straight line, as shown in Fig. 47, and converge towards a	Lecture 8: Arc Lamps And Arc Lighting	source workbench
radiation-light-and-illumination-fig-049 Fig. 49	arc. Thus comparing in Fig. 49 a 1-in. carbon arc A with a FIG. 49. 0.5-in. carbon arc B, the former requires, at 5 amperes, 112 volts and 560 watts, the latter only 84 volts and 420 watts,	Lecture 8: Arc Lamps And Arc Lighting	source workbench
radiation-light-and-illumination-fig-050 Fig. 50	154 RADIATION, LIGHT, AND ILLUMINATION. FIG. 50. FIG. 51a.	Lecture 8: Arc Lamps And Arc Lighting	source workbench
radiation-light-and-illumination-fig-052 Fig. 52	70. With the luminous arc, in which the light is proportional FIG. 52. 158	Lecture 8: Arc Lamps And Arc Lighting	source workbench
radiation-light-and-illumination-fig-054 Fig. 54	\r FIG. 54. ous height follow each other. Thus with an average arc volt- age of 75, momentary peaks of 85 volts will probably be reached	Lecture 8: Arc Lamps And Arc Lighting	source workbench
radiation-light-and-illumination-fig-055 Fig. 55	as shown diagrammatically in its simplest form in Fig. 55, the FIG. 55. two white screens A and B are illuminated, the one, A, by the light, L, which is to be tested, the other, B, by the standard S,	Lecture 9: Measurement Of Light And Radiation	source workbench
radiation-light-and-illumination-fig-057 Fig. 57	accuracy. FIG. 57. 78. When comparing lamps giving light of the same color, as incandescent lamps of the same filament temperature, that is,	Lecture 9: Measurement Of Light And Radiation	source workbench
radiation-light-and-illumination-fig-058 Fig. 58	MEASUREMENT OF LIGHT AND RADIATION. 175 FIG. 58. the photometer may be used as far as it agrees with the lumi-	Lecture 9: Measurement Of Light And Radiation	source workbench
radiation-light-and-illumination-fig-059 Fig. 59	Fig. 59, is the distribution curve in one meridian, it is the same FIG. 59. in every other meridian, and for photometric test of the illumi- nant it is sufficient to measure the light intensities in one merid-	Lecture 9: Measurement Of Light And Radiation	source workbench
radiation-light-and-illumination-fig-060 Fig. 60	the former, giving a horizontal or equatorial distribution of FIG. 60. light intensity about as shown in Fig. 60. In this case the horizontal distribution curve may also be determined photo-	Lecture 9: Measurement Of Light And Radiation	source workbench
radiation-light-and-illumination-fig-061 Fig. 61	side — minimum — intensity. Such curves are shown in Fig. 61. FIG. 61. This, however, carried out for every angle in the meridian, makes arc-light photometry rather laborious, especially as	Lecture 9: Measurement Of Light And Radiation	source workbench
radiation-light-and-illumination-fig-062 Fig. 62	is: FIG. 62. = 27r/sin<M^	Lecture 10: Light Flux And Distribution	source workbench
radiation-light-and-illumination-fig-064 Fig. 64	192 RADIATION, LIGHT, AND ILLUMINATION. FIG. 64. FIG. 65.	Lecture 10: Light Flux And Distribution	source workbench
radiation-light-and-illumination-fig-065 Fig. 65	FIG. 64. FIG. 65. FIG. 66.	Lecture 10: Light Flux And Distribution	source workbench
radiation-light-and-illumination-fig-066 Fig. 66	FIG. 65. FIG. 66. LIGHT FLUX AND DISTRIBUTION. 193	Lecture 10: Light Flux And Distribution	source workbench
radiation-light-and-illumination-fig-067 Fig. 67	direction. FIG. 67. Straight Line or Cylindrical Radiator.	Lecture 10: Light Flux And Distribution	source workbench
radiation-light-and-illumination-fig-068 Fig. 68	24 deg. above the horizontal, or in the space between a and a’ in Fig. 68. It is interesting to compare the three radiators, (1), (2), and (5), on the basis of equal maximum intensity, and on the basis of	Lecture 10: Light Flux And Distribution	source workbench
radiation-light-and-illumination-fig-070 Fig. 70	> FIG. 70. FIG. 71.	Lecture 10: Light Flux And Distribution	source workbench
radiation-light-and-illumination-fig-071 Fig. 71	FIG. 70. FIG. 71. In Fig. 72 is plotted the intensity distribution in the meridian	Lecture 10: Light Flux And Distribution	source workbench
radiation-light-and-illumination-fig-072 Fig. 72	(7) Single-Loop Filament. FIG. 72. 200	Lecture 10: Light Flux And Distribution	source workbench