Generally when it is humid, the person feels hotter or sometimes they say that they are drenched, this is because of the sweat that is generated from the body. Humidity increases the amount of sweat generated and makes the person feel a lot hotter than usual. Multiple researches have suggested that the human body sweats excessively when the humidity is higher. The sweat does not evaporate as fast as it should because of the increased humidity.
Generally what happens is that the body cools itself down by opening the pores of the skin and releasing the salts and water. When the water evaporates, the body heat is transferred to the air. The body has a high latent heat which is the heat that is required to change liquid into vapor; this process generally carries away enough heat to do a decent job of cooling the body. However, the rate at which the water evaporates depends on the amount of air that is already present in air. In this scenario, it is the sweat that fails to evaporate. When the relative humidity of the air reaches the highest level the, the body’s cooling system does not work. As a result of which sweat evaporates extremely slowly and that is why heat is generated in the body. When the sweat completely stops from evaporating, the body starts to get heat cramps or in some extreme cases, the body goes suffers a heat stroke. Heat stroke occurs when the body warms up and the body begins to cook itself.
A heat index metric provides the markers of weather conditions. This index gives a sign that the body is getting to a point where it might stroke out. For example, the body experiences 88 degree weather with a humidity of 85%. To help the laborers and the athletes deal with the weather, special clothing have developed that wipes away the moisture from the skin. This material of clothing pulls away the sweat from the skin and through tiny channels present in the cloth the sweat is accumulated on the outside of the clothing material. Some can argue that why not use cotton but the problem is cotton only soaks the moisture which gives a soggy feeling.
The point at which the air will begin to feel warm is when the temperature of the air is 77 degrees and the dew point temperature is 57 degrees. Dew point is the temperature of the air at which dew forms. The closer the temperature of the air is to the dew point, the air gets more humid. Low humidity obviously means that the temperature of the air is cooler. For example, if the temperature of the air is at 100 degrees, and the dew point is of 25, the heat index would only be 93.
The human body via the hypothalamus regulates the temperature of the body and in case of humid climate the body tries to maintain the temperature by releasing the sweat but the air is already filled with water hence the body sweat cannot be absorbed by the air. The sweat keeps on accumulating and the body keeps on getting warmer. The warmth of the body is coupled with the inhuman sweat the body releases. This makes the body warmer. The body heat can be regulated by drinking an excess amount of water and then the temperature of the body can remain stable. However, if the temperature increases to a great extent then the person might will sick and immediate help has to be provided.
When the relative humidity of the air reaches a dangerous level, the natural cooling system of the body simply fails to work. However, this occurs only when the humidity reaches a maximum point, this is always not the case and this does not occur in all the countries. The high humidity countries are the one which is near to the coastal area. The coastal areas are more humid than that of the other parts of the world because the air absorbs moisture from the sea and it becomes more humid. Hence, when near the sea, the skin gets a lot sticky, because the air already has a lot of moisture and the skin absorbs it.
This essay concludes that the humidity makes a person feel hotter because of the when the body sweats, the sweat get evaporated into the air and body cools down but with humidity in air, the sweat does not evaporate and body heats up.
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