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Arnold Orville Beckman (April 10, 1900 – May 18, 2004) was an American chemist, inventor, investor, and philanthropist. While a professor at California Institute of Technology, he founded Beckman Instruments based on his 1934 invention of the pH meter, a device for measuring acidity (and alkalinity), later considered to have "revolutionized the study of chemistry and biology". [1]
Beckman Model M pH Meter, 1937 [1] Beckman model 72 pH meter, 1960 781 pH/Ion Meter pH meter by Metrohm. A pH meter is a scientific instrument that measures the hydrogen-ion activity in water-based solutions, indicating its acidity or alkalinity expressed as pH. [2]
"Home" is the debut single and coronation song from American Idol season 11 winner Phillip Phillips. The song was co-written by Drew Pearson and Greg Holden , and produced by Drew Pearson. [ 4 ] [ 5 ] Phillips first performed the song on the season's final performance night on May 22, 2012, and then again on the finale after he was declared the ...
pH meter: pH (chemical acidity/basicity of a solution) photometer: illuminance or irradiance planometer: area polarimeter: rotation of polarized light potentiometer: voltage (term is also used to refer to a variable resistor) profilometer: surface roughness protractor: angle psychrometer: humidity pycnometer: fluid density pyranometer: solar ...
The AOL.com video experience serves up the best video content from AOL and around the web, curating informative and entertaining snackable videos.
In and of themselves, pH indicators are usually weak acids or weak bases. The general reaction scheme of acidic pH indicators in aqueous solutions can be formulated as: HInd (aq) + H 2 O (l) ⇌ H 3 O + (aq) + Ind − (aq) where, "HInd" is the acidic form and "Ind −" is the conjugate base of the indicator. Vice versa for basic pH indicators ...
Imported pH meters tended to be unreliable, possibly because of Japan's hot and humid climate. [2] They were also expensive. Rather than buy imported pH meters, Horiba had built his own pH meters for capacitor testing. [1] He saw a potential market for reliable, low-cost pH meters in Japan's food and chemical industries, and partnered with ...
American Homes 4 Rent, doing business as AMH, is a real estate investment trust based in Las Vegas, Nevada, that invests in single-family rental homes. As of December 31, 2019, the company owned 52,552 homes in 22 states.
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