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1 day ago · The history of penicillin follows observations and discoveries of evidence of antibiotic activity of the mould Penicillium that led to the development of penicillins that became the first widely used antibiotics. Following the production of a relatively pure compound in 1942, penicillin was the first naturally-derived antibiotic.
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For pre-1980 or so TV shows -- but not the usual Lucy or *Gunsmoke* reruns. This subreddit is for the ephemeral TV programs of the pre-VCR era -- the stuff no one ever expected to see again: newscasts, local kiddie shows and horror movie hosts, live TV dramas, game shows, soap operas, teen dance parties...
6 hours ago · There are two reasons. One, shade keeps the leafy vegetables such as kale, lettuce and spinach more tender. With less sunlight, the plants will not grow to the same size as they would with more sun. Naturally, the more sun, the more energy and photosynthesis the plant produces. What is partial shade in terms of hours of sun per day?
6 hours ago · The terms “acidic” and “basic” are associated with the pH scale, which measures the acidity or basicity of a substance. The pH scale was developed in the early 20th century by Danish chemist Søren Peder Lauritz Sørensen. He introduced the concept of pH, which stands for “potential of hydrogen,” to quantify the concentration of ...
5 hours ago · Her contributions to pivotal projects propelled her into the spotlight, earning her recognition as a top performer in the field. Upon her transition to the United States, Ms. Iancu continued to ...
1 day ago · Electronic Stability Control (ESC) is an advanced automotive safety system designed to enhance vehicle stability and prevent loss of control during critical driving situations. It continuously monitors the vehicle’s motion and compares it to the driver’s intended path. When the system detects a potential loss of control, it intervenes by ...
1 day ago · Science of man. Moral sentiments. David Hume ( / hjuːm /; born David Home; 7 May NS [26 April OS] 1711 – 25 August 1776) [7] was a Scottish Enlightenment philosopher, historian, economist, librarian, [8] and essayist, who is best known today for his highly influential system of philosophical empiricism, skepticism, and naturalism. [1]
