Discover three easy ways to make a homemade cold pack (chemical ice pack) using simple materials and endothermic reactions.
Monthly Archives: March 2018
March 27 is the birthday of Wilhelm Röntgen. Röntgen (also spelled Roentgen) was a German physicist who was awarded the first Nobel Prize in Physics for the discovery of Röntgen rays, or as he called them: x-rays. Röntgen was initially investigating cathode rays (electron beam) in vacuum tubes. He had […]
Today in Science History – March 27 – Wilhelm Roentgen ...
March 26 is Ferdinand Brickwedde’s birthday. Brickwedde was an American physicist who co-discovered the hydrogen isotope, deuterium, with Harold Urey and George Murphy. The team was attempting to definitively prove the existence of multiple isotopes of hydrogen. Hydrogen was considered the basic atom containing a proton and an electron and […]
Today in Science History – March 26 – Ferdinand Brickwedde ...
March 25 marks the passing of Friedrich Ferdinand Runge. Runge was a German chemist most famous for discovering caffeine. As a young man, Runge gained a name for himself for discovering the effects of belladonna extracts on pupil dilation. Belladonna or deadly nightshade relaxes muscles and when applied to the […]
Today in Science History – March 25 – Friedrich Runge ...
Daffodils, jonquils, and other types of narcissus are the harbingers of spring, so you may be tempted to bring them indoors to brighten a room. Go ahead and put them in a vase! However, it’s not just an urban legend that daffodils poison other flowers. Take a look at the […]
Do Daffodils Poison Other Flowers?
March 24 marks the passing of Willem Hendrik Keesom. Keesom was a Dutch physicist who was the first to solidify helium. Helium behaves in strange ways as it gets colder. Helium turns to a liquid like any other element, but it doesn’t do so until -269 °C or 4.2 K. […]
Today in Science History – March 24 – Willem Keesom ...
The Scoville scale is used to compare the relative heat of foods, such as ginger, black pepper, and hot peppers. Chemical heat is reported using Scoville heat units (SHU). The scale is named for Wilbur Scoville, the pharmacist who devised the organoleptic test for heat in 1912. This is a […]
Scoville Scale for Peppers and Other Hot Chemicals
March 23 marks the passing of Gilbert Newton Lewis. Lewis was an American chemist best known for his valence bond theory and dot structures. Lewis spent much of his early career studying the thermodynamics of chemical systems. He made systematic measurements of the free energy of chemical reactions. He also […]
Today in Science History – March 23 – Gilbert Lewis
March 22 is Robert Millikan’s birthday. Millikan was an American physicist best known for his famous oil drop experiment. The purpose of this experiment was to measure the charge of an electron. Millikan and Harvey Fletcher sprayed charged drops of oil between two horizontal charged plates. Gravity pulls the oil […]