Explain the difference between humidity, relative humidity, and dew point.
Have you tried Googling them?
Yes, I am so confused and it makes no sense
"Humidity is the amount of water vapor present in the air." - Wikipedia
"Relative humidity (RH) is the ratio of the partial pressure of water vapor to the equilibrium vapor pressure of water at a given temperature." - Wikipedia
"The dew point is the temperature to which air must be cooled to become saturated with water vapor. When further cooled, the airborne water vapor will condense to form liquid water (dew)." - Wikipedia
Humidity, relative humidity, and dew point are all related to the amount of moisture present in the air. Let me explain each term one by one.
Humidity: Humidity refers to the amount of water vapor present in the air. It represents the absolute measure of moisture content in the air. Humidity is often expressed as grams of water vapor per cubic meter of air (g/m³) or as a percentage.
Relative Humidity: Relative humidity (RH) is a measure of how much moisture is present in the air compared to the maximum amount of moisture the air can hold at a particular temperature. It is expressed as a percentage. Relative humidity takes into account both the actual amount of water vapor in the air and the temperature of the air. Warmer air can hold more moisture than cooler air, so the same amount of water vapor will result in a lower relative humidity in warm air compared to cold air.
To calculate relative humidity, you need to know the current air temperature and the dew point temperature. The dew point temperature is the temperature at which the air would become fully saturated and water vapor starts to condense into liquid droplets, forming dew or fog.
Dew Point: Dew point is the temperature at which the air becomes fully saturated, reaching 100% relative humidity. It is the point at which the air cannot hold any more moisture, and condensation begins to occur. When the dew point temperature is close to the actual air temperature, it means that the air is near saturation, and condensation or fog is more likely to happen.
To measure the difference between humidity, relative humidity, and dew point, you would need a hygrometer to determine the absolute humidity and a thermometer to measure the air temperature. By knowing the air temperature and dew point temperature, you can calculate the relative humidity using various formulas or online calculators.
So, in summary, humidity represents the absolute measure of moisture in the air, relative humidity indicates the moisture content relative to the air's capacity at a specific temperature, and dew point is the temperature at which air becomes saturated and condensation begins to occur.