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.
So just how much do you have to earn to be part of the elite 1 percent? That depends on whose figures you use. Based on 2009 tax year filing data, the Internal Revenue Service says an adjusted gross income, or AGI, of $343,927 or more will put you in the top 1 percent of taxpayers.he income thresholds are for the amount of AGI on a return, not per taxpayer. That means a single filer who made $343,927 or more in 2009 is in the top 1 percentile. A married couple with two kids and combined earnings of $343,927 or more also was among the top earners in the country.