An article from Science News Jan 2022
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Biography
Abbe, Ernst (1840–1905)
Article
Acetaminophen
A common medicine used to relieve mild to moderate pain and reduce fever. Acetaminophen (N-acetyl-p-aminophenol), or paracetamol, is a white crystalline compound with the molecular formula C8H9NO2 (Fig. 1). It is a member of the aniline family of…
Article
Acetylcholine
A naturally occurring quaternary ammonium cation ester, with the formula CH3(O)COC2H4N(CH3)3+, which plays a prominent role in nervous system function as a neurotransmitter. Acetylcholine (Fig. 1) is an organic compound released from certain…
Article
Adaptive optics
Technologies to optimize the performance of optical systems wherein controllable optical elements maintain a sharply focused image in the presence of wavefront aberrations. The practical development of adaptive optics started in the late 1960s. Main…
Biography
Addison, Thomas (1793–1860)
Biography
Adler, Alfred (1870–1937)
Biography
Adrian, Edgar Douglas (1889–1977)
Biography
Agassiz, (Jean) Louis Rodolphe (1807–1873)
Biography