Price to Earnings Ratio: Arriving at a price to earnings ratio is not easy. There are a lot of factors that play into what the public is willing to pay for the earnings of a company. Those of us who have seen the prototypes know that this product could be insanely popular. ( I think it could make 50% of televisions & computer screens obsolete.
Half-life is defined as the time it takes for one half of a radioactive element to decay into a daughter isotope. As radioactive isotopes of elements decay, they lose their radio activity and become a brand new element known as a daughter isotope.
Nuclear half-life expresses the time required for half of a sample to undergo radioactive decay. Exponential decay can be expressed mathematically like this: #A(t) = A_0 * (1/2)^(t/t_(1/2))# (1), where. #A(t)# - the amount left after t years; #A_0# - the initial quantity of the substance that will undergo decay; #t_(1/2)# - the half-life of the decaying quantity.