Sound, Noise, Vibration and….Circulation October 23, 2006Posted by healthyself in Aesthetics, Amplified Signals, Amplitude, Art, Bioeffects, Biological Effects, Body Temperature, Buzzing, Children's health, Circulation, Color, Computer Rooms, Decision Making, Ear, Electrical Components, Electrical Pulses, Electrical Surges, Electrical Wiring, Electromagnetic Field, Electromagnetic Spectrum, Electromagnetic waves, Electrosensitivity, Electrosmog, ELF, EMF Research, EMF's, Environment, Exposure, Frequencies, Health related, Hearing, Interdisciplinary, Lifestyle, Long Term Health Risks, Men's Health, Parenting, Pulses, Radio Frequency Radiation, Radio Waves, Research Needed, Risk Factor, Safe Levels, School administrators, Schools, Sound, Who is Affected?, Women's Health, Workplace.
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"In art processes, noise can be caused by vibration, forging, woodworking and other machinery, pneumatic tools, exhaust fans, etc. In particular, old or improperly maintained equipment tends to create more noise. In general, if someone has to raise their voice to be heard by another person one to two feet away, then the noise level is too high, especially if it is a steady noise....
Some studies have shown that woodworking teachers have a higher rate
of hearing loss than other teachers." "Sound intensity is measured in decibels (dB), on a logarithmic scale. In this scale, 90 dB is ten times more intense than 80 dB, and 110 dB is ten times more intense than 100 dB. The sound intensity doubles for every increase of 3 dB, showing that small increases in decibel levels can involve large increases in sound intensity. Table 7-1 shows the decibel levels of common sounds. --------------------------------------------------------------------------- Table 7-1 Approximate Sound Levels of Common Noise Sources Source Sound Level (dB) Jet engine 160 Loud amplified music 118 Planer 115 Portable grinder 110 Circular saw 105 Sander, foundry 95 Classroom teaching voice at 3 feet 75 Normal speaking voice at 3 feet
"Pneumatic and vibrating equipment such as chain saws can also create problems due to vibration. Raynaud's phenomenon, which is also called "white fingers" or "dead fingers", affects the circulation of the fingers, causing them to turn white from lack of blood and to lose sensation. Vibration can cause this, particularly with simultaneous exposure to cold, for example, from the air blast of pneumatic tools. This condition is initially temporary, but can spread to the whole hand and cause permanent damage."