Author name: Threeyzmonkeys

#203 How does a pacemaker work?

I learned this today. A pacemaker works by using electrical stimulation to make the heart muscles contract and the heart pump blood. A pacemaker is used to alter the rhythm of a heart. It is usually implanted to help with a slow or an irregular heartbeat. There are many reasons why a heartbeat could become […]

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#200 Why are plants green?

I learned this today. Plants are green because they absorb light in the wavelengths that are red and blue, while reflecting light in the wavelength that is green. Plants create energy through the process of photosynthesis. They convert light energy into chemical energy. Living organisms that convert light into energy are called autotrophs (photoautotrophs to

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#196 When did the CIA start?

I learned this today. The CIA was formed on September 18th, 1947. The idea behind some kind of agency to manage intelligence seems to have started after the Japanese attack on Pearl Harbor. America was caught unawares by the attack and a lot of people said that they should have had some idea. At the

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#195 How do fiber optic cables work?

I learned this today. A fiber optic cable works by sending information encoded in a beam of light. Different technologies send information in different ways. A telegraph and an old style telephone send signals with electric currents. A cell phone uses radio waves. A fiber optic cable sends signals using light. Fiber optic cables were

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