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.
Study: Average Attention Span Now 8 Seconds â Lower than a Goldfish. With an average of 8 seconds, down from 12. A study from Microsoft involving more than 2,000 people has found that the average attention span has dipped to a low 8 seconds â down from 12 seconds in 2000. A goldfish has an attention span of 9 seconds. There are many effects from smartphones and the like on the human body which are never written about.