This week in history I learned about the Polio vaccine and the the laser.
The first thing I learned about this week was the Polio vaccine. Polio is a debilitating disease that could permanently cripple or kill its victims. Jonas Salk invented the Polio vaccine, and it was announced as safe in 1955.It prevents person from contracting polio, eliminating the fear and effects associated with the disease. Joy spread around the world immediately, as relief spread throughout rations. Polio has been almost eradicated, and there is hope that it will be fully and forever eradicated soon.
The second thing I learned about was the laser. The discovery of quantum physics I 1900 led Einstein to extend and predict the possibility of laser light. Charles Towns invented the laser in 1958 at Bell Labs after inventing the laser. Laser light is coherent, focused, wavelength, and can be used for cutting or information transmission. Bell Labs and other companies began building their own lasers for various purposes. Lasers enabled barcode scanners at supermarkets, data, audio, and visual media like CDs and DVDs.
This week in history I learned about things that help with health, cutting, and light shows.
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