ASNT Level III- Visual & Optical Testing

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The color (chromaticity) of black-body radiation depends on the temperature of the black body; the locus of such colors, shown here in CIE 1931 x,y space, is known as the Planckian locus. http://en.wikipedia.org/wiki/Black-body_radiation Charlie Chong/ Fion Zhang
1.3.2 Wien Radiation Law In the temperature range of incandescent filament lamps (2,000 to 3,400 K) and in the visible wavelength region (380 to 770 nm), a simplification of the Planck equation, known as the Wien radiation law, gives a good representation of the blackbody distribution of spectral radiance. The Wien displacement law gives the relationship between the wavelength at which a blackbody at temperature T in degrees Kelvin emits maximum power per unit wavelength and the temperature T. In fact the product of absolute temperature T and the peak wavelength is a constant. It gives the relationship between blackbody distributions at various temperatures only with this important limitation. Charlie Chong/ Fion Zhang
Page 1 and 2: ASNT Level III- Visual & Optical Te
Page 3 and 4: Reading 4 ASNT Nondestructive Handb
Page 5 and 6: SECTION 2 THE PHYSICS OF LIGHT Char
Page 7 and 8: SECTION 2: The Physics of Light PAR
Page 9 and 10: 1.1 Radiant Energy Theories Several
Page 11 and 12: Electromagnetic Theory The electrom
Page 13 and 14: Unified Theory The unified theory o
Page 15 and 16: 1.2 Light and the Energy Spectrum T
Page 17 and 18: Keywords: • The velocity of light
Page 19 and 20: Table 1 gives the speed of light in
Page 21 and 22: FIGURE 1. Small aperture in an encl
Page 23 and 24: Although planets and stars are neit
Page 25 and 26: FIGURE 2. Blackbody radiation curve
Page 27 and 28: FIGURE 2. Blackbody radiation curve
Page 29: FIGURE 2. Blackbody radiation curve
Page 33 and 34: 1.3.3 Stefan-Boltzmann Law The Stef
Page 35 and 36: 1.3.6 Selective Radiators The emiss
Page 37 and 38: FIGURE 3. Radiation curves for blac
Page 39 and 40: The apertures between coils of the
Page 41 and 42: After absorption of sufficient ener
Page 43 and 44: This equation can he converted to a
Page 45 and 46: The standard spectral luminous effi
Page 47 and 48: 1.6 Luminous Efficiency of Light So
Page 49 and 50: 2.1 Photovoltaic Cells Photovoltaic
Page 51 and 52: FIGURE 4. Cross section of a barrie
Page 53 and 54: FIGURE 4. Cross section of a barrie
Page 55 and 56: Photoconductor Cells Charlie Chong/
Page 57 and 58: FIGURE 5. By the photoelectric effe
Page 59 and 60: Photoelectric Effects & Secondary r
Page 61 and 62: 2.4 Photodiodes and Phototransistor
Page 63 and 64: Schematic cross section of an integ
Page 65 and 66: Phototransistors Charlie Chong/ Fio
Page 67 and 68: 2.5 Photometry Progress in the scie
Page 69 and 70: 2.5.2 Photopic and Scotopic Vision
Page 71 and 72: Photopic and Scotopic Vision Charli
Page 73 and 74: Photopic and Scotopic Vision Charli
Page 75 and 76: TABLE 2. Measurable characteristics
Page 77 and 78: Inverse Square Law http://pondscien
Page 79 and 80: Lambert Cosine Law Charlie Chong/ F
Page 81 and 82:
2.6.4 Photometric Applications Phot
Page 83 and 84:
Various types of neutral filters of
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2.7 Photometers A photometer is a d
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Photometry Charlie Chong/ Fion Zhan
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Some portable illuminance meters co
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FIGURE 7. Average spectral sensitiv
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2.8.3 Effect of Incidence Angle At
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2.8.4 Effect of Temperature. Wide t
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2.8.6 Photometer Zeroing It is impo
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2.9 Meters Using Photomultiplier Tu
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2.9.1 Luminance Photometers The bas
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2.9.1 Brightness Spot Meter The bri
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High Sensitivity Photometer Charlie
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2.10 Equivalent Sphere Illumination
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2.10.3 Visual Equivalent Sphere Ill
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Visual Equivalent Sphere Illuminati
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Visual Equivalent Sphere Illuminati
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2.10.4 Physical Equivalent Sphere I
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2.10.5 Visual Task Photometers The
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Another type of reflectometer (see
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FIGURE 8. A light cell reflectomete
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When a monochromator is used to dis
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In all radiometric work, it is impo
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These devices consist basically of
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Spectrophotometers Charlie Chong/ F
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2.14.2 Distribution Photometers Lum
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FIGURE 9. Goniometer variations: (a
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FIGURE 10. Schematic side elevation
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FIGURE 11. Schematic side elevation
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2.14.7 Integrating Sphere Photomete
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Integrating Sphere Photometer Charl
Page 147:
Charlie Chong/ Fion Zhang
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ASNT Level III- Visual & Optical Testing

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