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Update Unit 3: Physics.md

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Grade 10/Science/SNC2DZ/Unit 3: Physics.md
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- `Colour`: Reflected parts of white light from non-luminous objects
- Blacks absorb all visible light while whites do the opposite
|Type of electromagnetic wave|Picture|Use/phenomena|
|:---------------------------|:------|:------------|
|Radio Waves|<img src="https://images-na.ssl-images-amazon.com/images/I/91PqLproBUL._SX679_.jpg" width="200">|• AM/FM radio<br>• TV signals<br>• cellphone communication<br>• radar<br>• astronomy (for example, discovery of pulsars)|
|Microwaves|<img src="https://cdn.shopify.com/s/files/1/2660/5202/products/KMCC501S_HC_1400x.jpg?v=1571711208" width="200">|• telecommunications<br>• microwave ovens<br>• astronomy (for example, background radiation associated with the big bang)|
|Infrared light|<img src="https://i.ytimg.com/vi/wIZozabAMO8/maxresdefault.jpg" width="200">|• remote controls (eg DVD players and gamecontrollers)<br>• lasers <br>• heat detection<br>• Astronomy|
|Visible light|<img src="https://images.ctfassets.net/cnu0m8re1exe/5bMohBQkq3U2zU2Z5PtyBA/8a3a0f4530c95e41e868527c0983dd21/rainbow.jpg?w=650&h=433&fit=fill" width="200"> |• human vision<br> • rainbows <br>• astronomy (eg optical teloscopes, discovering the chemical composition of celestial bodies)|
|Ultraviolet light|<img src="https://i1.wp.com/treatcancer.com/wp-content/uploads/2015/08/670px-Understand-the-Effects-of-Different-UV-Rays-Step-1.jpg?ssl=1" width="200">|• causes skin to tan and sunburn <br>• increases risk of skin cancer<br>• kills bacteria in food and water<br>• lasers<br>• stimulates production of Vitamen D<br>• Astronomy|
|X-Rays|<img src="https://medlineplus.gov/images/Xray.jpg" width="200"> |• medical imaging<br>• security equipment<br>• cancer treatment<br>• astronomy (eg. study of black holes, binary star systems)|
|Gamma Rays|<img src="https://cdn.mos.cms.futurecdn.net/qZjPVEZUNdngyBykB4J6fj-320-80.jpg" width="300">|• Cancer treatment<br>• product of nuclear decay <br>• astronomy (eg. supernovas)|
### Luminescence
|Type Of Luminescence|Description|Picture|