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.
We met a couple friends out for dinner and drinks and we were very surprised by our entire experience. When we arrived we checked in and the host told us it would be a 35 minute wait. Their wait time quote was very accurate and we were seated in about 30 minutes. The first thing I noticed were the screens above the bar that listed their selection of beers including many local pours and a large variety of craft beers.