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Humidity vs Relative Humidity and What’s the Difference

Often Pharmaceuticals related people are confused about the definition of Humidity and Relative Humidity. It is not a minor difference basically Relative Humidity affects the quality of a pharmaceutical product. In order to maintain accurate quality of product, we need to know Humidity vs Relative Humidity and what is Difference between both.

Introduction:

Humidity and relative humidity measure the amount of water present in the air, but they both have a difference in the measurement method.

The humidity of the air depends on the atmosphere of the area and the season of the year. In dry areas like the desert, humidity remains very low while in the area near the ocean and tropical rainforests it remains very high. It also remains higher in the rainy season than in the summer. The air can contain a limited amount of moisture or water vapor. When humidity rises above its limit, it turns into droplets known as fog.

What is Humidity

Humidity is the amount of water vapor in the air. When there is a lot of water vapor in the air, the humidity is high. The higher the humidity, the more humid it feels outside.

Further, Humidity is usually explained as relative humidity. Relative humidity is the actual amount of water vapor in the air, expressed as a percentage of the maximum amount of water vapor that the air can absorb at the same temperature. Think of the air as a cool -10 degrees Celsius (14 degrees Fahrenheit). At this temperature, the air can absorb a maximum of 2.2 grams of water per cubic meter. So if there is 2.2 grams of water per cubic meter outside at -10 degrees Celsius, we have an uncomfortable relative humidity of 100%. If there were 1.1 grams of water in the air at -10 degrees Celsius, we would have a relative humidity of 50%.

What is relative humidity?

The relative humidity is the ratio of the current absolute humidity to the highest possible absolute humidity (which depends on the current air temperature). A measured value of 100 percent relative humidity means that the air is completely saturated with water vapor and can no longer absorb, so that rain is possible. This doesn’t mean that the relative humidity has to be 100 per cent for it to rain – it has to be 100% where the clouds form, but the relative humidity near the ground could be much lower.

Difference Between Humidity and Relative Humidity

We have read about the definition of both but now we try to know more about What is the Difference Between Humidity and Relative Humidity. The difference between humidity and relative humidity is that humidity is the broader term to denote the presence of water vapor in the air, while relative humidity is the percentage of water vapour available in the volume of air.

In simpler terms, it’s the moisture we sweat, not the heat in the room. More importantly, places near the sea and water are considered more humid than continental places.

The main difference between humidity and relative humidity is that humidity is the amount of water vapor that is in the air, while relative humidity is the measure of the water vapor that is present in a volume of air. It is the ratio of the actual water vapour to the water vapor it can contain in the volume of air.

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