The evaporation of sweat is due to water molecules taking energy from the body (cooling it) . The water molecules have higher energy and so enter a gaseous state.
In conditions of high humidity, evaporation becomes virtually impossible since the air can only absorb a certain amount of water vapour. ie. you cant have more than 100% humidity, so only a certain amount of water can be absorbed, so the sweat remains on your skin instead of evaporating.
People actually sweat the same amount on a humid day as they do a cold, dry day. The difference is that the sweat isn't able to evaporate as quickly because of how much moisture is already in the air.
we sweat more on a hot dry day,as on a humid day there is lot of moisture already present in the atmosphere.And on a dry day heat is more and moisture is less...
In The Online World It Says That, "Humidity is the measure of the percentage of water vaporization in the air. When there is high humidity, less sweat from your skin evaporates into the air because the air has too much water already. Sweat evaporating cools you because the process of evaporation absorbs heat from you body. Hence, you feel uncomfortable because your body cannot get rid of heat from sweat. "
because there is lot of water vapor in the atmosphere than on a normal day and that is why the normal evaporation process of sweat does not work properly and we feel sticky
On a hot humid day the air circulation is heldup by the moisture density present in the air. the air gains weight and will not move . where as on a dry hot day the air is lighter and travels freely. * * * * * The air on a hot humid day holds much more moisture than on a hot dry day. As a result, your perspiration will evaporate much more quickly on a dry hot day and the process of evaporation will require heat equivalent to the latent heat of vaporisation. A lot of this heat will be taken from your body and that is why you will feel cooler.
People actually sweat the same amount on a humid day as they do a cold, dry day. The difference is that the sweat isn't able to evaporate as quickly because of how much moisture is already in the air.
You will sweat the same on both days if your activity is the same. It will evaporate faster on a dry day, so you will notice less sweat on a dry day.
It is actually not a matter of sweating more but of it being more difficult to evaporate the sweat. If you are in a dry and windy place it is very simple for sweat to evaporate, in a more humid area there is more water in the air already and therefore makes evaporation of the sweat much more difficult. Then it would appear that you sweat more because you are seeing the sweat, however it is a matter of evaporation.
Humid day
In humid weather, the air is already saturated with moisture, so sweat evaporation is slower, which can make you feel like you are sweating more. Your body produces sweat to cool down, but if the sweat can't evaporate efficiently, you may sweat more to try to regulate your body temperature.
we sweat more on a hot dry day,as on a humid day there is lot of moisture already present in the atmosphere.And on a dry day heat is more and moisture is less...
On a dry day, water will evaporate from the wet bulb thermometer, cooling it. On a humid day, since moisture is already in the air, less will evaporate, and cool it less.
In The Online World It Says That, "Humidity is the measure of the percentage of water vaporization in the air. When there is high humidity, less sweat from your skin evaporates into the air because the air has too much water already. Sweat evaporating cools you because the process of evaporation absorbs heat from you body. Hence, you feel uncomfortable because your body cannot get rid of heat from sweat. "
The stickiness of the day is humidity. So most of the moisture on your body is the wetness in the air and not just sweat.
we don't sweat more but what actually happens is that sweat gets retained on our body. On humid days air is already containing lot of moisture which prevents evaporation of sweat from our body and thus is retained on the body, which inturn makes us to feel warmer.
Because humidity means there is a lot of water vapor in the air, and thus, water cannot evaporate, as there is no room for it in the air.
because there is lot of water vapor in the atmosphere than on a normal day and that is why the normal evaporation process of sweat does not work properly and we feel sticky