Aurora colors come from atoms that are trying to shed some of their energy.
In very thin air, oxygen survives in a delicate, high-energy state that emits green light. In denser air, atomic collisions knock oxygen to a lower-energy state that emits red. Nitrogen is a robust emitter that glows bright in even lower, denser layers of the atmosphere.
Scientists may have found a way to make biodegradable plastic from algae, a development that could potentially diminish the harmful effects of microplastics that linger for thousands of years. ABC News reports: https://flip.it/mizbsY #Science#Plastics#Environment
Van De Graaff (VDG) Generator kit - V2 - 150mm - 40,000V of sparky fun.
The 150mm Van De Graaff kit is designed for kids (or adults) to learn about "static" electricity by actually building a working device. A small High voltage generator that will achieve 30,000 to 40,000 volts of "static" electricity. The 150mm van De Graaff generator is a complete Van de Graaff system, comprising of a Polished Stainless Steel Dome, a high speed motor, dissimil... Read More #kits#makers#stem#science
An interesting article on the time line of the universe.
The Universe passed through many epochs, from free quarks and gluons to stable protons and neutrons to neutral atoms to stars, galaxies, planets, and more. The precise time at which these various epochs occurred, including the (current) dark energy-dominated era, can be pinpointed with precision. Here’s how we know.
American astronomer Walter Sydney Adams died #OTD in 1956.
One of Adams' most notable achievements was his collaboration with the astronomer Theodore Dunham, Jr., in the early 20th century. Together, they developed a method for measuring the radial velocities of stars using spectroscopy, which involves analyzing the light emitted or absorbed by celestial objects. This method allowed them to determine the speed at which stars were moving toward or away from Earth.
Vicodin is another prescription medication used to relieve moderate to severe pain. Similar to Percocet, Vicodin is a combination of two main ingredients: hydrocodone and acetaminophen. Hydrocodone is an opioid pain medication, and acetaminophen is a non-opioid pain reliever and fever reducer.
U.S/CA Keep an eye on the NOAA geomagnetic activity tracker Tonight-Sunday.
Folks as far south as Alabama, U.S may be treated to an #aurora.
In fact, with 5 CMEs headed our way, everyone across the globe should keep an eye on the night time sky.
Happy #FossilFriday, check out this skull from a juvenile Gryposaurus! These hadrosaurs called North America their home roughly 75 million years ago, and this particular individual would have enjoyed the lush jungle that makes up the Kaiparowits Formation. (1/2) #paleontology#dinosaur#science
L'écotoxicité des rivières bretonnes provoquée par les pesticides n'a pas baissé depuis 2012. C'est ce que montre l'analyse statistique exclusive réalisée par Akwari Coop pour « Splann ! ». 🧪 1/
L'écotoxicité, qui mesure les ravages sur les populations animales et végétales, est globalement restée stable dans les cours d'eau bretons sur la décennie passée.
Des substances ont certes été interdites, mais remplacées par d'autres. Un jeu de « chaises écotoxico-musicales ».
Le gouvernement vient d'entériner le changement de l'indicateur d'usage des pesticides pour le futur plan Ecophyto 2030. Les scientifiques préviennent qu'il entraînera une baisse en trompe l'œil de l'emploi des produits agro-chimiques sur les champs.