Visible Light It’s Visible! By Hoot Hennessy, Owen Weitzman, and Chris D’agostino.
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Transcript of Visible Light It’s Visible! By Hoot Hennessy, Owen Weitzman, and Chris D’agostino.
![Page 1: Visible Light It’s Visible! By Hoot Hennessy, Owen Weitzman, and Chris D’agostino.](https://reader035.fdocuments.in/reader035/viewer/2022070411/56649f445503460f94c65be0/html5/thumbnails/1.jpg)
Visible Light
It’s Visible!
By Hoot Hennessy, Owen Weitzman, and Chris D’agostino
![Page 2: Visible Light It’s Visible! By Hoot Hennessy, Owen Weitzman, and Chris D’agostino.](https://reader035.fdocuments.in/reader035/viewer/2022070411/56649f445503460f94c65be0/html5/thumbnails/2.jpg)
A Few Details
• Visible light has wavelengths between 7.5e-7 meters and 4e-7 meters.
• Visible light has frequencies ranging between 4e14 Hz and 7.5e14 Hz.
• It fits between Infrared and Ultraviolet light on the Electromagnetic Spectrum.
• Visible light is the only light that we can see (hence the name “visible”!).
![Page 3: Visible Light It’s Visible! By Hoot Hennessy, Owen Weitzman, and Chris D’agostino.](https://reader035.fdocuments.in/reader035/viewer/2022070411/56649f445503460f94c65be0/html5/thumbnails/3.jpg)
Some Uses of Visible Light
The primary use of Visible light is vision! Visible light is the only type of light that our eyes are responsive to.
![Page 4: Visible Light It’s Visible! By Hoot Hennessy, Owen Weitzman, and Chris D’agostino.](https://reader035.fdocuments.in/reader035/viewer/2022070411/56649f445503460f94c65be0/html5/thumbnails/4.jpg)
More Uses
• Still and motion photography both depend on visible light! Chemicals in film react with visible light and create an image that we can see.
![Page 5: Visible Light It’s Visible! By Hoot Hennessy, Owen Weitzman, and Chris D’agostino.](https://reader035.fdocuments.in/reader035/viewer/2022070411/56649f445503460f94c65be0/html5/thumbnails/5.jpg)
More Uses
• Visible light can also be used for spectroscopy. This is the measurement of what parts of the spectrum a certain material reflects and absorbs. This can be used in astronomy to determine the chemical makeup of far-away objects.
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Even More Uses
• Visible light can be concentrated into laser radiation, which can be used to read data from CDs and DVDs, as well as performing very precise surgery, as a powerful enough laser can cut through human flesh.
![Page 7: Visible Light It’s Visible! By Hoot Hennessy, Owen Weitzman, and Chris D’agostino.](https://reader035.fdocuments.in/reader035/viewer/2022070411/56649f445503460f94c65be0/html5/thumbnails/7.jpg)
And More Uses!
• Without visible light, we wouldn’t be able to see things on a television screen.
• Without visible light, reading and sign language wouldn’t work, because we wouldn’t be able to see.
![Page 8: Visible Light It’s Visible! By Hoot Hennessy, Owen Weitzman, and Chris D’agostino.](https://reader035.fdocuments.in/reader035/viewer/2022070411/56649f445503460f94c65be0/html5/thumbnails/8.jpg)
Animals
• Many animals other than ourselves can see visible light. However, there are many animals that can also see different parts of the Electro Magnetic spectrum.
![Page 9: Visible Light It’s Visible! By Hoot Hennessy, Owen Weitzman, and Chris D’agostino.](https://reader035.fdocuments.in/reader035/viewer/2022070411/56649f445503460f94c65be0/html5/thumbnails/9.jpg)
Who Discovered Visible Light?
• Who?• Isaac Newton
• When?• Summer of 1666
• Where?• England
• How?• He split light into a spectrum with
glass.
![Page 10: Visible Light It’s Visible! By Hoot Hennessy, Owen Weitzman, and Chris D’agostino.](https://reader035.fdocuments.in/reader035/viewer/2022070411/56649f445503460f94c65be0/html5/thumbnails/10.jpg)
Can it be Dangerous?
• High energy blue light can cause damage to the eyes, and lead to macular degeneration.
• Lasers can burn people, but these don’t occur naturally.
![Page 11: Visible Light It’s Visible! By Hoot Hennessy, Owen Weitzman, and Chris D’agostino.](https://reader035.fdocuments.in/reader035/viewer/2022070411/56649f445503460f94c65be0/html5/thumbnails/11.jpg)
Some Facts!
• The color of visible light is determined by wavelength.
• There are 7 spectral colors.
• More colors can be created by mixing visible light of different wavelengths.
![Page 12: Visible Light It’s Visible! By Hoot Hennessy, Owen Weitzman, and Chris D’agostino.](https://reader035.fdocuments.in/reader035/viewer/2022070411/56649f445503460f94c65be0/html5/thumbnails/12.jpg)
Some More Facts!
• Indigo is hard to distinguish from blue and violet for some people. Therefore, some people don’t think that it should be a spectral color.
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