4 ms·
I wonder if we shall take exposure density into consideration? If RF is emitted in all directions, the closer the phone to the body, the same amount of RF will
by theseadroid 7y ago
I wonder if we shall take exposure density into consideration? If RF is emitted in all directions, the closer the phone to the body, the same amount of RF will be received by a smaller area of skin?
- oefrha 7y agoYou’re still thinking about a point source, where the actual scenario is closer to two parallel plates, in which case the non-normal components cancel out, leaving only the normal component, except at the edges. The most basic example from electrostatics: http://hyperphysics.phy-astr.gsu.edu/hbase/electric/elesht.html http://hyperphysics.phy-astr.gsu.edu/hbase/electric/elesht.h...
- cdelsolar 7y agoI don't think the phone emits radiation from its entire body
- RL_Quine 7y agoThat's what the cuts around the metal band of the iPhone are for, to segment the edge into different tuned antennas.
- klodolph 7y agoIf you try to make an antenna too small compared to wavelength, it will become less efficient and more difficult to design. 900 MHz is the 33 cm band, so if you have a more standard size antenna on the order of quarter-wavelength size, you get an antenna that’s about 8cm.