Physical hazards are environmental hazards which are not chemicals or elements or organisms, but those that you could feel or hear, i.e. those that can be detected by our senses such as temperature.
Environmental temperature can cause serious health effects by increasing or decreasing the body temperature. The body temperature increases when we are in a hot environment such as hot tub and decreases when we are in a cold environment such as a mountain slope.
Following are the factors that increases or decreases body heat.:
= M + W + R + C + K + E
is the change of temperature in the body (loss or gain).
is the heat gained due to the metabolic process in the body (as a byproduct of
is the heat gained from external work such as physical activity, which leads
to contraction of muscles, producing heat.
is the radiant heat exchange rate (if outdoors – taking in warmth from sun,
if indoors then no heat taken in).
is the loss of heat due to wind velocity.
is the conductive heat exchange rate ( If in a hot tub – conduct heat from
warm water, if fall into the sea – lose heat from the body due to cold
E is the rate of evaporative heat loss (amount of heat lost during jogging)
Would you rather be in an extremely cold or hot environment?
Noise & Vibration
We are constantly exposed to noise of varying degree in our day to day life. Exposure to noise could lead to serious health effects such as hearing loss.
Vibration is the back-and-forth, side-to-side, and up-and-down motion of the body that starts from and returns to the same reference position. Exposure to vibration motion could occur at an occupational setting or during a pleasure trip in ship or car.