Beta-plus (Î² +) radiation is the emission of positrons, which are the antimatter form of electrons. When a positron slows to speeds similar to those of electrons in the material, the positron will annihilate an electron, releasing two gamma photons of 511 keV in the process.
The Congressional Budget Office puts the cut-off lower, at $347,000 in 2007, or $252,000 after subtracting federal taxes and adding back transfers. Measured by net worth, rather than income, the top 1% started at $6.9m in 2009, according to the Federal Reserve, down 23% from 2007.
The average American earned $5 per hour in 1976, which is equal to $19.7 of today money (inflation adjusted). Today the average salary is $18.8 per hour, which is at least 5% less earnings then in 1976.This decline in earnings (real value) started in 1971 when United State of America abandon the gold standard. Subpages (2): Average Earnings Australia Average Earnings US.oday the average salary is $18.8 per hour, which is at least 5% less earnings then in 1976. This decline in earnings (real value) started in 1971 when United State of America abandon the gold standard. Subpages (2): Average Earnings Australia Average Earnings US.