Search results
Results from the WOW.Com Content Network
The SAR for whole body and head is less than 4 and 3.2 Watt per kilogram, which should not exceed 15 and 10 minutes, respectively. In case that body is exposed to a static magnetic field, the amplitude of the magnetic field should not exceed 4 and 8 Tesla for infants and adults, respectively. [ 28 ]
Shortwave (1.6 to 30 MHz) diathermy (where EM waves are used to produce heat) can be used as a therapeutic technique for its analgesic effect and deep muscle relaxation, but has largely been replaced by ultrasound. Temperatures in muscles can increase by 4–6 °C, and subcutaneous fat by 15 °C.
The lungs are normally protected against aspiration by a series of protective reflexes such as coughing and swallowing. Significant aspiration can only occur if the protective reflexes are absent or severely diminished (in neurological disease, coma , drug overdose , sedation or general anesthesia ).
Exposure to a vacuum, or experiencing all but the most extreme uncontrolled decompression, does not cause the body to explode or internal fluids to boil (although the fluids in the mouth and lungs will indeed boil at altitudes above the Armstrong limit); rather, it will lead to a loss of consciousness once the body has depleted the supply of ...
Quantum effects provide additional sources of EMR, such as the transition of electrons to lower energy levels in an atom and black-body radiation. [9] The energy of an individual photon is quantized and proportional to frequency according to Planck's equation E = hf , where E is the energy per photon, f is the frequency of the photon, and h is ...
The food is so iconic that whole restaurant chains have been built around it. These include Outback Steakhouse, Ruth's Chris, Peter Luger, Fleming's, Sizzler, LongHorn and Morton's.
Magnetic separation is also useful in mining iron as it is attracted to a magnet. [3] Another application, not widely known but very important, is to use magnets in process industries to remove metal contaminants from product streams. [1] This takes a lot of importance in food or pharmaceutical industries.
Focusing on breaking up sedentary time, or the time that you spend not moving, also has important health benefits that might be more important than your total distance walked per day, Rothstein says.