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Pronounced: My as ma.
1. A vaporous exhalation formerly believed to cause disease also : a heavy vaporous emanation.
2. An influence or atmosphere that tends to deplete or corrupt.
Analog Signal : An analog signal is continuous, meaning that there are no breaks or interruptions. Analog recording equipment records the exact waveform of the original sound. August 20th is National Radio Day. For more information about the history of the radio and to learn more about this iconic invention click:
Caisson Style Tower: Lighthouse built on an iron caisson. A caisson was essentially a hollow tube made of heavy rolled-iron plates. The caissons were bolted together on land, transported into place, sunk, and filled with sand, gravel, rock, or cement. Some referred to them as coffee pot lights or bug lights. After the invention of the internal combustion engine, they became known as spark plug lights. August 7th is National Lighthouse Day. For more information regarding the history of the lighthouse, click
Adiabatic Lapse Rate: A mathematical formula measuring the rate of change in atmospheric temperature depending on decreases or increases in altitude in thermal equilibrium. August 19th is the beginning of National Aviation Week. For more information regarding the history of aviation, click