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.
A related site called We Are the 99% records stories from people around the country. The calculator above shows where your income stands on the wide range of the 99%. An annual salary above $506,000 puts you in the top 1%, while you need to make less than $2,500 a year to be in the bottom 1%.Where do you stand? related site called We Are the 99% records stories from people around the country. The calculator above shows where your income stands on the wide range of the 99%. An annual salary above $506,000 puts you in the top 1%, while you need to make less than $2,500 a year to be in the bottom 1%.