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.
1 Women were paid about 90% of what men earned until age 35, at which point median earnings for women start to slow down compared to men's earnings, further widening the pay gap. 2  The average full-time working woman will lose more than $460,000 over a 40 year period in wages due only to the wage gap. This can be either the earnings ratio or the actual pay gap. 2  Women earned on average $0.78 to every $1 earned by men in 2013 (78%) for annual earnings. 3  In 2014 women earned 82.5% of men's salaries b ased on median weekly earnings for full-time workers compared to 62.1% in 1979.