1. The Properties of Light Connor Oi Kennysen Cheong

2. What is light? Energy in the form of electro magnetic radiation. Travels in the form of waves. 300,000 km/hour

3. Properties of wavvvvves Amplitude, Wavelength, Period, Frequency, Speed –These attributes determine the properties of the light wave.

4. Visible light Light detected by the human eye. –390 – 750 nm Only light that appears within this range can be seen human eyes.

5. Larger Wavvvvves Infrared, microwave, radio, etc. –Used in night vision, thermal sensors, telescopes, etc.

6. Smaller Waves Ultraviolet, X-ray, Gamma ray, etc. Used in: –Disinfecting drinking water, sun tans, black lights.

7. Light in Astronomy Seeing light from stars is the most basic method of viewing the cosmos. Other spectrums of light can also be used to see further into space. »Ultraviolet co Seeing light from stars is the most basic method of viewing the cosmos. Other spectrums of light can also be used to see further into space. Seeing light from stars or other bodies in space is the most basic method of viewing the cosmos. Constellations, moon, planets, etc.

8. Non-visible light Used in Astronomy to find objects that do not give off visible light. »Ultraviolet TelescopeUltraviolet Telescope

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