Visible Light
Rhiannon Pearson
Four Uses for Visible Light:
- Dispersion; it allows people to see what stars are made out of by looking at the mixture of wavelengths in the light.
- Vision.
- Photo-dynamic Therapy (PDT)
- Photosynthesis.
Telescope
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Camera
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Visible Light Spectrum
Wavelength Range: 750nm- 400nm
Frequency Range: 4x10 14 - 7.5x10 14 Hz
*underlined numbers are supposed to be exponents
Tour of the EMS 05 - Visible Light Waves
Visible Light Technology
Li-Fi
What is it?
- Li-F is wireless internet access using light; in many ways, it's more efficient than Wi-Fi.
What Materials Are Used?
- The items that create Li-Fi are LED light bulbs and a chip that is attached.
What Is the Impact?
- Li-Fi offers higher speeds than WiFi, and it’s more secure because it cannot be intercepted without a clear line of sight. Radio Waves don’t interfere with it, and Li-Fi doesn’t create interference with more sensitive types of technology, so it’s better for certain workplaces. Li-Fi prevents Piggybacking and interference with neighbor’s internet access. Out of everything, the main thing people applaud Li-Fi for is the secure internet access.
Discovery?
- Scientists from the Shanghai Institute of Technical Physics originally discovered Li-Fi on October 18, 2013.
pureLiFi Li-1st