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| == Color == ''PIRA classification 6F'' ||<#dddddd>Grayed Demos are either not available or haven't been built yet. || |
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| == Color == | |
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| ''PIRA classification 6F'' | |
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| ||<#dddddd> Grayed Demos are either not available or haven't been built yet.|| | |
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| ||<:10%>'''PIRA #'''||<:>'''Demonstration Name'''||<:60%>'''Abstract'''|| || 6F10.10 || color box || A commercial Singerman box projects blue, red, and green light onto a screen with individually variable intensity. || || 6F10.10 || color box || Overlap red, green, and blue light of adjustable intensity on a translucent screen. || || 6F10.10 || color box || The Welch color box shows the addition of the primary colors. || || 6F10.10 || additive color mixing || Mix red, green, and blue in a color box. || || 6F10.11 || color addition || Red, green, and blue lamps shine from the corners of a white triangle. A rod or rods are placed on the screen to show the colors of shadows. || || 6F10.12 || cenco color apparatus || The primary colors can be projected onto a screen. || || 6F10.13 || color synthesizer || A color synthesizer allows demonstration of the significance of dominate wavelength, purity, luminosity, etc. || || 6F10.15 || color addition || Wratten filters Nos. 19, 47, and 61 are used to make a slide with 1/3 of a circle of each color. A projection arrangement shows the combination of colors and division of light between the separate colors. || || 6F10.16 || color projector || Adapting a lantern slide projector for mixing primary colors. || || 6F10.17 || projecting colors || Many color demonstrations are performed with a slide projector and slides reflected off swivel mirrors. || || 6F10.18 || lantern slide colors || A diffraction grating is held in front of a lantern projector with seven slits, one side with primary additive colors, the other with subtractive, and the center white. || || 6F10.20 || color filters || Cyan, magenta, and yellow filters are available as loose squares or fixed in a plexiglass holder for use on the overhead projector. || || 6F10.22 || dichromatic primary pairs || Discussion of the standard light addition, subtraction, as they relate to two color mixing. || || 6F10.23 || artist's colors || On why artists use red, yellow, and blue instead of red, green, and blue. || || 6F10.23 || artist's colors - letter || Hey guys, artists use pigments, not light, and anyway the subtractive primary colors are cyan, magenta, and yellow. Information of 4-color printing and real artist's pigments too. || || 6F10.25 || synthesis of colors || A disc with colored sectors appears white when rotated. || || 6F10.25 || spinning color discs || Disks with colored sectors are spun until the colors blend together. || || 6F10.25 || Newton's color disc || A spinning disc of colored sectors appears white. || || 6F10.26 || weird slit with Hg light || A slit and "inverted slit" used with Hg and a prism produce the normal line spectra and "inverted spectrum" of complementary colors. || || 6F10.30 || recombining the spectrum || Recombine the spectrum after passing through a prism to get white light or remove a color and get the complement. || || 6F10.30 || recombining colors || Recombining dispersed light after reflecting out various colors, etc. || || 6F10.30 || recombining the spectrum || Obtain a spectrum with a prism, reflect out a color with a small thin mirror, and recombine the light with a lens. || || 6F10.33 || purity of the spectrum || A second prism at right angles bends each color without dispersion. || || 6F10.35 || splitting and recombining || A half spectrum filter splits out light from a beam which is then recombined at a spot. || || 6F10.36 || dispersion and recombination || Several variations of recombining dispersed light from a prism. || || 6F10.45 || red and green || || || 6F10.45 || complementary shadow || Shadows of red and white lights illuminating the same object from different angles appear to produce green light. || || 6F10.50 || filtered spectrum || Part of a beam of white light is projected through a prism. When a filter is inserted in the beam, the spectrum and transmitted light are compared. || || 6F10.51 || liquid cell absorption || An absorbing solution is placed in a liquid cell placed in a beam of light before dispersion. || || 6F10.52 || plotting absorption || A motor drive is connected to a grating and the output of a lead sulfide detector is plotted on a strip chart recorder as the spectrum is scanned with various filters and intensities. Reference: AJP 35(6),542-3. || || 6F10.52 || spectra and liquid absorption || Absorption cells filled with liquids are used with a 35 mm projector and the B & L spectra projection kit. || || 6F10.52 || filtergraph || A slide with four filters and the corresponding spectrographic diagrams. || || 6F10.54 || photocell measurement of absorption || Use suitable sources, cells, and filters to measure absorption of substances with a photocell. || || 6F10.55 || band absorption spectrum || A flask of nitrous oxide is placed in the beam of white light before dispersion by a prism spectroscope. Didymium glass and dilute blood are also suggested. || || 6F10.56 || absorption spectrum of chlorophyll || Show the absorption spectrum of chlorophyll obtained by macerating leaves in methyl alcohol. Red and Green transmit. || || 6F10.57 || water absorption bands || A monochrometer (38-5.11) is used to demonstrate water absorption bands. || || 6F10.61 || metal films and dyes || A thin film of gold transmits green but looks reddish-yellow by reflection. Dyes also transmit and reflect different colors. || || 6F10.65 || dichromatism || Green cellophane transmits more red light than green. Stack lots of sheets and the color of transmitted light changes from green to red. || || 6F10.70 || three conditions for color || The three conditions are: Color must be in the source, the object must reflect or transmit the color, the detector must be sensitive to the color. Shine different colored light at different colored objects. || || 6F10.71 || color due to absorption || Light from a projection lantern reflected off red, green, and blue glass to the ceiling is the same but the transmitted light is colored by absorption. || || 6F10.75 || colored yarn || Skeins of colored yarn are illuminated with different colored light. || || 6F10.75 || colors in spectral light || A rose is viewed in white, red, green, and blue light. || || 6F10.80 || complementary color transitions || Lecture room experiments are proposed which demonstrate complementary color transitions due to complementary boundary conditions at the aperture. || |
||<10% style="text-align:center">'''PIRA #''' ||<style="text-align:center">'''Demonstration Name''' ||<style="text-align:center">'''Subsets'''||<60% style="text-align:center">'''Abstract''' || ||6F10.10 ||color box || ||A commercial Singerman box projects blue, red, and green light onto a screen with individually variable intensity. || ||6F10.10 ||color box || ||Overlap red, green, and blue light of adjustable intensity on a translucent screen. || ||6F10.10 ||color box || ||The Welch color box shows the addition of the primary colors. || ||6F10.10 ||additive color mixing || ||Mix red, green, and blue in a color box. || ||6F10.11 ||color addition || ||Red, green, and blue lamps shine from the corners of a white triangle. A rod or rods are placed on the screen to show the colors of shadows. || ||6F10.12 ||cenco color apparatus || ||The primary colors can be projected onto a screen. || ||6F10.13 ||color synthesizer || ||A color synthesizer allows demonstration of the significance of dominate wavelength, purity, luminosity, etc. || ||6F10.15 ||color addition || ||Wratten filters Nos. 19, 47, and 61 are used to make a slide with 1/3 of a circle of each color. A projection arrangement shows the combination of colors and division of light between the separate colors. || ||6F10.16 ||color projector || ||Adapting a lantern slide projector for mixing primary colors. || ||6F10.17 ||projecting colors || ||Many color demonstrations are performed with a slide projector and slides reflected off swivel mirrors. || ||6F10.18 ||lantern slide colors || ||A diffraction grating is held in front of a lantern projector with seven slits, one side with primary additive colors, the other with subtractive, and the center white. || ||6F10.20 ||color filters || ||Cyan, magenta, and yellow filters are available as loose squares or fixed in a plexiglass holder for use on the overhead projector. || ||6F10.22 ||dichromatic primary pairs || ||Discussion of the standard light addition, subtraction, as they relate to two color mixing. || ||6F10.23 ||artist's colors || ||On why artists use red, yellow, and blue instead of red, green, and blue. || ||6F10.23 ||artist's colors - letter || ||Hey guys, artists use pigments, not light, and anyway the subtractive primary colors are cyan, magenta, and yellow. Information of 4-color printing and real artist's pigments too. || ||6F10.25 ||synthesis of colors || ||A disc with colored sectors appears white when rotated. || ||6F10.25 ||spinning color discs || ||Disks with colored sectors are spun until the colors blend together. || ||6F10.25 ||Newton's color disc || ||A spinning disc of colored sectors appears white. || ||6F10.26 ||weird slit with Hg light || ||A slit and "inverted slit" used with Hg and a prism produce the normal line spectra and "inverted spectrum" of complementary colors. || ||6F10.30 ||recombining the spectrum || ||Recombine the spectrum after passing through a prism to get white light or remove a color and get the complement. || ||6F10.30 ||recombining colors || ||Recombining dispersed light after reflecting out various colors, etc. || ||6F10.30 ||recombining the spectrum || ||Obtain a spectrum with a prism, reflect out a color with a small thin mirror, and recombine the light with a lens. || ||6F10.33 ||purity of the spectrum || ||A second prism at right angles bends each color without dispersion. || ||6F10.35 ||splitting and recombining || ||A half spectrum filter splits out light from a beam which is then recombined at a spot. || ||6F10.36 ||dispersion and recombination || ||Several variations of recombining dispersed light from a prism. || ||6F10.45 ||red and green || || || ||6F10.45 ||complementary shadow || ||Shadows of red and white lights illuminating the same object from different angles appear to produce green light. || ||6F10.50 ||filtered spectrum || ||Part of a beam of white light is projected through a prism. When a filter is inserted in the beam, the spectrum and transmitted light are compared. || ||6F10.51 ||liquid cell absorption || ||An absorbing solution is placed in a liquid cell placed in a beam of light before dispersion. || ||6F10.52 ||plotting absorption || ||A motor drive is connected to a grating and the output of a lead sulfide detector is plotted on a strip chart recorder as the spectrum is scanned with various filters and intensities. Reference: AJP 35(6),542-3. || ||6F10.52 ||spectra and liquid absorption || ||Absorption cells filled with liquids are used with a 35 mm projector and the B & L spectra projection kit. || ||6F10.52 ||filtergraph || ||A slide with four filters and the corresponding spectrographic diagrams. || ||6F10.54 ||photocell measurement of absorption || ||Use suitable sources, cells, and filters to measure absorption of substances with a photocell. || ||6F10.55 ||band absorption spectrum || ||A flask of nitrous oxide is placed in the beam of white light before dispersion by a prism spectroscope. Didymium glass and dilute blood are also suggested. || ||6F10.56 ||absorption spectrum of chlorophyll || ||Show the absorption spectrum of chlorophyll obtained by macerating leaves in methyl alcohol. Red and Green transmit. || ||6F10.57 ||water absorption bands || ||A monochrometer (38-5.11) is used to demonstrate water absorption bands. || ||6F10.61 ||metal films and dyes || ||A thin film of gold transmits green but looks reddish-yellow by reflection. Dyes also transmit and reflect different colors. || ||6F10.65 ||dichromatism || ||Green cellophane transmits more red light than green. Stack lots of sheets and the color of transmitted light changes from green to red. || ||6F10.70 ||three conditions for color || ||The three conditions are: Color must be in the source, the object must reflect or transmit the color, the detector must be sensitive to the color. Shine different colored light at different colored objects. || ||6F10.71 ||color due to absorption || ||Light from a projection lantern reflected off red, green, and blue glass to the ceiling is the same but the transmitted light is colored by absorption. || ||6F10.75 ||colored yarn || ||Skeins of colored yarn are illuminated with different colored light. || ||6F10.75 ||colors in spectral light || ||A rose is viewed in white, red, green, and blue light. || ||6F10.80 ||complementary color transitions || ||Lecture room experiments are proposed which demonstrate complementary color transitions due to complementary boundary conditions at the aperture. || |
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| ||<:10%>'''PIRA #'''||<:>'''Demonstration Name'''||<:60%>'''Abstract'''|| || 6F30.10 || dispersion curve of a prism || Light passes through a grating and then through a second slit at right angles and a prism generating a dispersion curve in color on the screen. || || 6F30.15 || deviation with no dispersion || Light passed through oppositely pointed crown and flint glass prisms adjusted to give light deviated in two directions but with no dispersion. || || 6F30.20 || dispersion with no deviation || Light passes through prisms of crown and flint glass adjusted to give two beams of the same dispersion but different deviation. || || 6F30.30 || anomalous dispersion of fuchsin || Overcoming the difficulties of showing anomalous dispersion with fuchsin. || || 6F30.30 || anomalous dispersion of sodium || An absorption cell for the anomalous dispersion of sodium is described. Diagrams, Construction details in appendix, p.1354. || || 6F30.31 || bending dark absorption line of Na || When salt is heated on a flame in the path of a narrow beam of light before dispersion, the edges of the spectrum close to the dark band bend up or down. || || 6F30.50 || optical ceramics: dispersion || A custom fabricated prism made from LaSFN-9 glass shows a cutoff between transmission and total internal reflection that can be tuned through the visible spectrum by turning the prism. || |
||<10% style="text-align:center">'''PIRA #''' ||<style="text-align:center">'''Demonstration Name''' ||<style="text-align:center">'''Subsets'''||<60% style="text-align:center">'''Abstract''' || ||6F30.10 ||dispersion curve of a prism || ||Light passes through a grating and then through a second slit at right angles and a prism generating a dispersion curve in color on the screen. || ||6F30.15 ||deviation with no dispersion || ||Light passed through oppositely pointed crown and flint glass prisms adjusted to give light deviated in two directions but with no dispersion. || ||6F30.20 ||dispersion with no deviation || ||Light passes through prisms of crown and flint glass adjusted to give two beams of the same dispersion but different deviation. || ||6F30.30 ||anomalous dispersion of fuchsin || ||Overcoming the difficulties of showing anomalous dispersion with fuchsin. || ||6F30.30 ||anomalous dispersion of sodium || ||An absorption cell for the anomalous dispersion of sodium is described. Diagrams, Construction details in appendix, p.1354. || ||6F30.31 ||bending dark absorption line of Na || ||When salt is heated on a flame in the path of a narrow beam of light before dispersion, the edges of the spectrum close to the dark band bend up or down. || ||6F30.50 ||optical ceramics: dispersion || ||A custom fabricated prism made from LaSFN-9 glass shows a cutoff between transmission and total internal reflection that can be tuned through the visible spectrum by turning the prism. || |
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| ||<:10%>'''PIRA #'''||<:>'''Demonstration Name'''||<:60%>'''Abstract'''|| || 6F40.10 || sunset || Pass abeam of white light through a tank of water with scattering centers from a solution of oil in alcohol. || || 6F40.10 || sunset || A beam of white light is passed through a tank of water and a solution of cedarwood oil in alcohol is poured in to create scattering centers. || || 6F40.10 || artifical sunset || Pass a beam through a hypo solution and add acid. || || 6F40.11 || sunset || Light scattering with a hypo solution. || || 6F40.11 || sunset || HCl into hypo solution scatters blue light. || || 6F40.11 || sunset || A beam of light is scattered when passed through water containing hypo and HCl. || || 6F40.12 || various scattering centers, Mei || Alternatives to hypo for the sunset demo including latex spheres that demonstrate Mie scattering. || || 6F40.15 || red and blue beam || A red beam is passed through a solution of gum mastic but a blue beam is not. Diagram. || || 6F40.20 || optical ceramics scattering || || || 6F40.20 || optical ceramics: Rayleigh scatterin || Type 7070 glass is treated to induce glass-in-glass phase separation used to show Rayleigh scattering. || || 6F40.30 || color of smoke || Cigarette smoke is blue, but after exhaling is white. || || 6F40.50 || microwave scattering || Show scattering of microwaves with a dielectric dipole inserted in the beam. Picture. || || 6F40.60 || multiple scattering || Examples of common observations inexplicable by single scattering, e.g., darkening of wet sand, whiteness of milk, etc., are discussed without invoking the complete incoherent scattering theory. || || 6F40.80 || halos || Look at a point source lamp through a fogged microscope slide. || || 6F40.80 || dust halos || A glass plate covered with dust is held in a beam that converges into a hole in a screen. Circular halos appear on the screen around the hole. || || 6F40.82 || lunar halo picture || Picture and analysis of an unusual lunar halo. || |
||<10% style="text-align:center">'''PIRA #''' ||<style="text-align:center">'''Demonstration Name''' ||<style="text-align:center">'''Subsets'''||<60% style="text-align:center">'''Abstract''' || ||6F40.10 ||sunset || ||Pass abeam of white light through a tank of water with scattering centers from a solution of oil in alcohol. || ||6F40.10 ||sunset ||pira200||A beam of white light is passed through a tank of water and a solution of cedarwood oil in alcohol is poured in to create scattering centers. || ||6F40.10 ||artifical sunset || ||Pass a beam through a hypo solution and add acid. || ||6F40.11 ||sunset || ||Light scattering with a hypo solution. || ||6F40.11 ||sunset || ||HCl into hypo solution scatters blue light. || ||6F40.11 ||sunset || ||A beam of light is scattered when passed through water containing hypo and HCl. || ||6F40.12 ||various scattering centers, Mei || ||Alternatives to hypo for the sunset demo including latex spheres that demonstrate Mie scattering. || ||6F40.15 ||red and blue beam || ||A red beam is passed through a solution of gum mastic but a blue beam is not. Diagram. || ||6F40.20 ||optical ceramics scattering || || || ||6F40.20 ||optical ceramics: Rayleigh scatterin || ||Type 7070 glass is treated to induce glass-in-glass phase separation used to show Rayleigh scattering. || ||6F40.30 ||color of smoke || ||Cigarette smoke is blue, but after exhaling is white. || ||6F40.50 ||microwave scattering || ||Show scattering of microwaves with a dielectric dipole inserted in the beam. Picture. || ||6F40.60 ||multiple scattering || ||Examples of common observations inexplicable by single scattering, e.g., darkening of wet sand, whiteness of milk, etc., are discussed without invoking the complete incoherent scattering theory. || ||6F40.80 ||halos || ||Look at a point source lamp through a fogged microscope slide. || ||6F40.80 ||dust halos || ||A glass plate covered with dust is held in a beam that converges into a hole in a screen. Circular halos appear on the screen around the hole. || ||6F40.82 ||lunar halo picture || ||Picture and analysis of an unusual lunar halo. || |
Color
PIRA classification 6F
Grayed Demos are either not available or haven't been built yet. |
6F10. Synthesis and Analysis of Color
PIRA # |
Demonstration Name |
Subsets |
Abstract |
6F10.10 |
color box |
|
A commercial Singerman box projects blue, red, and green light onto a screen with individually variable intensity. |
6F10.10 |
color box |
|
Overlap red, green, and blue light of adjustable intensity on a translucent screen. |
6F10.10 |
color box |
|
The Welch color box shows the addition of the primary colors. |
6F10.10 |
additive color mixing |
|
Mix red, green, and blue in a color box. |
6F10.11 |
color addition |
|
Red, green, and blue lamps shine from the corners of a white triangle. A rod or rods are placed on the screen to show the colors of shadows. |
6F10.12 |
cenco color apparatus |
|
The primary colors can be projected onto a screen. |
6F10.13 |
color synthesizer |
|
A color synthesizer allows demonstration of the significance of dominate wavelength, purity, luminosity, etc. |
6F10.15 |
color addition |
|
Wratten filters Nos. 19, 47, and 61 are used to make a slide with 1/3 of a circle of each color. A projection arrangement shows the combination of colors and division of light between the separate colors. |
6F10.16 |
color projector |
|
Adapting a lantern slide projector for mixing primary colors. |
6F10.17 |
projecting colors |
|
Many color demonstrations are performed with a slide projector and slides reflected off swivel mirrors. |
6F10.18 |
lantern slide colors |
|
A diffraction grating is held in front of a lantern projector with seven slits, one side with primary additive colors, the other with subtractive, and the center white. |
6F10.20 |
color filters |
|
Cyan, magenta, and yellow filters are available as loose squares or fixed in a plexiglass holder for use on the overhead projector. |
6F10.22 |
dichromatic primary pairs |
|
Discussion of the standard light addition, subtraction, as they relate to two color mixing. |
6F10.23 |
artist's colors |
|
On why artists use red, yellow, and blue instead of red, green, and blue. |
6F10.23 |
artist's colors - letter |
|
Hey guys, artists use pigments, not light, and anyway the subtractive primary colors are cyan, magenta, and yellow. Information of 4-color printing and real artist's pigments too. |
6F10.25 |
synthesis of colors |
|
A disc with colored sectors appears white when rotated. |
6F10.25 |
spinning color discs |
|
Disks with colored sectors are spun until the colors blend together. |
6F10.25 |
Newton's color disc |
|
A spinning disc of colored sectors appears white. |
6F10.26 |
weird slit with Hg light |
|
A slit and "inverted slit" used with Hg and a prism produce the normal line spectra and "inverted spectrum" of complementary colors. |
6F10.30 |
recombining the spectrum |
|
Recombine the spectrum after passing through a prism to get white light or remove a color and get the complement. |
6F10.30 |
recombining colors |
|
Recombining dispersed light after reflecting out various colors, etc. |
6F10.30 |
recombining the spectrum |
|
Obtain a spectrum with a prism, reflect out a color with a small thin mirror, and recombine the light with a lens. |
6F10.33 |
purity of the spectrum |
|
A second prism at right angles bends each color without dispersion. |
6F10.35 |
splitting and recombining |
|
A half spectrum filter splits out light from a beam which is then recombined at a spot. |
6F10.36 |
dispersion and recombination |
|
Several variations of recombining dispersed light from a prism. |
6F10.45 |
red and green |
|
|
6F10.45 |
complementary shadow |
|
Shadows of red and white lights illuminating the same object from different angles appear to produce green light. |
6F10.50 |
filtered spectrum |
|
Part of a beam of white light is projected through a prism. When a filter is inserted in the beam, the spectrum and transmitted light are compared. |
6F10.51 |
liquid cell absorption |
|
An absorbing solution is placed in a liquid cell placed in a beam of light before dispersion. |
6F10.52 |
plotting absorption |
|
A motor drive is connected to a grating and the output of a lead sulfide detector is plotted on a strip chart recorder as the spectrum is scanned with various filters and intensities. Reference: AJP 35(6),542-3. |
6F10.52 |
spectra and liquid absorption |
|
Absorption cells filled with liquids are used with a 35 mm projector and the B & L spectra projection kit. |
6F10.52 |
filtergraph |
|
A slide with four filters and the corresponding spectrographic diagrams. |
6F10.54 |
photocell measurement of absorption |
|
Use suitable sources, cells, and filters to measure absorption of substances with a photocell. |
6F10.55 |
band absorption spectrum |
|
A flask of nitrous oxide is placed in the beam of white light before dispersion by a prism spectroscope. Didymium glass and dilute blood are also suggested. |
6F10.56 |
absorption spectrum of chlorophyll |
|
Show the absorption spectrum of chlorophyll obtained by macerating leaves in methyl alcohol. Red and Green transmit. |
6F10.57 |
water absorption bands |
|
A monochrometer (38-5.11) is used to demonstrate water absorption bands. |
6F10.61 |
metal films and dyes |
|
A thin film of gold transmits green but looks reddish-yellow by reflection. Dyes also transmit and reflect different colors. |
6F10.65 |
dichromatism |
|
Green cellophane transmits more red light than green. Stack lots of sheets and the color of transmitted light changes from green to red. |
6F10.70 |
three conditions for color |
|
The three conditions are: Color must be in the source, the object must reflect or transmit the color, the detector must be sensitive to the color. Shine different colored light at different colored objects. |
6F10.71 |
color due to absorption |
|
Light from a projection lantern reflected off red, green, and blue glass to the ceiling is the same but the transmitted light is colored by absorption. |
6F10.75 |
colored yarn |
|
Skeins of colored yarn are illuminated with different colored light. |
6F10.75 |
colors in spectral light |
|
A rose is viewed in white, red, green, and blue light. |
6F10.80 |
complementary color transitions |
|
Lecture room experiments are proposed which demonstrate complementary color transitions due to complementary boundary conditions at the aperture. |
6F30. Dispersion
PIRA # |
Demonstration Name |
Subsets |
Abstract |
6F30.10 |
dispersion curve of a prism |
|
Light passes through a grating and then through a second slit at right angles and a prism generating a dispersion curve in color on the screen. |
6F30.15 |
deviation with no dispersion |
|
Light passed through oppositely pointed crown and flint glass prisms adjusted to give light deviated in two directions but with no dispersion. |
6F30.20 |
dispersion with no deviation |
|
Light passes through prisms of crown and flint glass adjusted to give two beams of the same dispersion but different deviation. |
6F30.30 |
anomalous dispersion of fuchsin |
|
Overcoming the difficulties of showing anomalous dispersion with fuchsin. |
6F30.30 |
anomalous dispersion of sodium |
|
An absorption cell for the anomalous dispersion of sodium is described. Diagrams, Construction details in appendix, p.1354. |
6F30.31 |
bending dark absorption line of Na |
|
When salt is heated on a flame in the path of a narrow beam of light before dispersion, the edges of the spectrum close to the dark band bend up or down. |
6F30.50 |
optical ceramics: dispersion |
|
A custom fabricated prism made from LaSFN-9 glass shows a cutoff between transmission and total internal reflection that can be tuned through the visible spectrum by turning the prism. |
6F40. Scattering
PIRA # |
Demonstration Name |
Subsets |
Abstract |
6F40.10 |
sunset |
|
Pass abeam of white light through a tank of water with scattering centers from a solution of oil in alcohol. |
6F40.10 |
sunset |
pira200 |
A beam of white light is passed through a tank of water and a solution of cedarwood oil in alcohol is poured in to create scattering centers. |
6F40.10 |
artifical sunset |
|
Pass a beam through a hypo solution and add acid. |
6F40.11 |
sunset |
|
Light scattering with a hypo solution. |
6F40.11 |
sunset |
|
HCl into hypo solution scatters blue light. |
6F40.11 |
sunset |
|
A beam of light is scattered when passed through water containing hypo and HCl. |
6F40.12 |
various scattering centers, Mei |
|
Alternatives to hypo for the sunset demo including latex spheres that demonstrate Mie scattering. |
6F40.15 |
red and blue beam |
|
A red beam is passed through a solution of gum mastic but a blue beam is not. Diagram. |
6F40.20 |
optical ceramics scattering |
|
|
6F40.20 |
optical ceramics: Rayleigh scatterin |
|
Type 7070 glass is treated to induce glass-in-glass phase separation used to show Rayleigh scattering. |
6F40.30 |
color of smoke |
|
Cigarette smoke is blue, but after exhaling is white. |
6F40.50 |
microwave scattering |
|
Show scattering of microwaves with a dielectric dipole inserted in the beam. Picture. |
6F40.60 |
multiple scattering |
|
Examples of common observations inexplicable by single scattering, e.g., darkening of wet sand, whiteness of milk, etc., are discussed without invoking the complete incoherent scattering theory. |
6F40.80 |
halos |
|
Look at a point source lamp through a fogged microscope slide. |
6F40.80 |
dust halos |
|
A glass plate covered with dust is held in a beam that converges into a hole in a screen. Circular halos appear on the screen around the hole. |
6F40.82 |
lunar halo picture |
|
Picture and analysis of an unusual lunar halo. |