Alpha particles. Alpha particles are made of 2 protons and 2 neutrons. This means that they have a charge of +2, and a mass of 4. (the mass is measured in atomic mass units, where each proton & neutron=1) We can write them as , or, because they're the same as a helium nucleus, . Alpha particles are relatively slow and heavy.
For more, visit TIME Health. 1  The average attention span for the notoriously ill-focused goldfish is nine seconds, but according to a new study from Microsoft Corp., people now generally lose concentration after eight seconds, highlighting the affects of an increasingly digitalized lifestyle on the brain.
Ever spend what feels like forever browsing through Netflix to find the perfect movie to watch? Chances are, you actually didn't scroll for very long. According to NBC News, the data experts at Netflix have calculated how long its users will spend browsing before they get fed up and quit: just 60 to 90 seconds. Researchers at the company crunched the numbers because they're trying make Netflix's recommendation system better.