How is humidity measured? Detailed answer

BIG ENCYCLOPEDIA FOR CHILDREN AND ADULTS
Free library / Directory / Big encyclopedia for children and adults

How is humidity measured? Detailed answer

Big encyclopedia for children and adults

Directory / Big encyclopedia. Questions for quiz and self-education

Did you know?

How is humidity measured?

Moisture in the atmosphere causes clouds, fog, rain, snow, and warm, clear days. The atmosphere contains moisture in various forms: water vapor, liquid water, or frozen water. A hot, humid day differs from a hot, dry day only in the presence of water vapor in the atmosphere. The presence of water vapor in the atmosphere is called humidity. When we say "80% relative humidity" we mean that the air contains 80% of the amount of water vapor it can hold.

When air has 100 percent relative humidity, it contains as much water vapor as possible and is called saturated air. Warm air can hold more water vapor than cold air. An instrument used to measure the amount of water vapor in the air is called a hydrometer. The most accurate way is to compare dry and wet bulb readings. Two thermometers are mounted side by side on the same base. The surface of one is covered with a rough, wet cloth that can retain moisture. The surface of the second thermometer remains free and dry. Evaporation of water from an object cools it.

If the air contains a lot of water vapor, the moisture from the wet bulb evaporates slowly and it does not show a strong drop in temperature. If the air is dry, the moisture from the wet bulb evaporates quickly and the wet bulb reads a much lower temperature than the dry bulb.

Relative humidity can be determined by comparing two temperatures. There are other types of hydrometers that use the movement of air, chemicals, to measure the rise or fall in air humidity.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

How did fruits and vegetables get their names?

The name of all objects that we encounter has its own origin. Sometimes we are surprised to learn where this name came from. Take, for example, the word "gooseberry" in English, which can be literally translated as "gooseberry", although it has nothing to do with geese! In Saxon times, the first part of the word was consonant with the word rough, which explained that these berries grow on a prickly, rough bush.

The word "raspberry" also in English comes from the German verb "gather" or "gathered together", since the small particles are brought together in this delicious berry. The English name of the strawberry comes from its shoots, branching widely in different directions from the plant, which made up the first part of the word "running, striving."

Bilberry is named after its color in Russian, and in English its name comes from the similarity of the stalk and the berry hanging on it with a crane. The names of currants and cherries got their names from the names of the cities where they were first grown. Grapes have something in common with wine in Russian, but in English, Italian, Danish and French they have a different origin, meaning "collected in a brush." The English name for the Hungarian plum has two parts, the first is associated with Lord Gage, who brought it to England, the second with its greenish color when it is unripe. Apricot comes from a similar Latin name meaning "early ripening". "Tomatoes" are named in Western India.

The English name for the pineapple comes from its resemblance to a pine cone. The strange name "pomegranate" for a southern exotic fruit comes from the Greek word "pomegranate" - "having many seeds." And in English, it also has the first part, denoting that it is a fruit. "Chestnut" is consonant with the name of the city where it came from. The name of the walnut in Great Britain is of Saxon origin, denoting a foreign nut, because it originally appeared in Persia. The Arabic word for "Spanish vegetable garden" gave spinach its name.

Test your knowledge! Did you know...

▪ What is a clam?

▪ Where is the theater located, in which the payment for the performance depends on the number of smiles of the audience?

▪ What birds helped the Japanese and Chinese in fishing?

See other articles Section Big encyclopedia. Questions for quiz and self-education.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Artificial leather for touch emulation 15.04.2024

In a modern technology world where distance is becoming increasingly commonplace, maintaining connection and a sense of closeness is important. Recent developments in artificial skin by German scientists from Saarland University represent a new era in virtual interactions. German researchers from Saarland University have developed ultra-thin films that can transmit the sensation of touch over a distance. This cutting-edge technology provides new opportunities for virtual communication, especially for those who find themselves far from their loved ones. The ultra-thin films developed by the researchers, just 50 micrometers thick, can be integrated into textiles and worn like a second skin. These films act as sensors that recognize tactile signals from mom or dad, and as actuators that transmit these movements to the baby. Parents' touch to the fabric activates sensors that react to pressure and deform the ultra-thin film. This ... >>

Petgugu Global cat litter 15.04.2024

Taking care of pets can often be a challenge, especially when it comes to keeping your home clean. A new interesting solution from the Petgugu Global startup has been presented, which will make life easier for cat owners and help them keep their home perfectly clean and tidy. Startup Petgugu Global has unveiled a unique cat toilet that can automatically flush feces, keeping your home clean and fresh. This innovative device is equipped with various smart sensors that monitor your pet's toilet activity and activate to automatically clean after use. The device connects to the sewer system and ensures efficient waste removal without the need for intervention from the owner. Additionally, the toilet has a large flushable storage capacity, making it ideal for multi-cat households. The Petgugu cat litter bowl is designed for use with water-soluble litters and offers a range of additional ... >>

The attractiveness of caring men 14.04.2024

The stereotype that women prefer "bad boys" has long been widespread. However, recent research conducted by British scientists from Monash University offers a new perspective on this issue. They looked at how women responded to men's emotional responsibility and willingness to help others. The study's findings could change our understanding of what makes men attractive to women. A study conducted by scientists from Monash University leads to new findings about men's attractiveness to women. In the experiment, women were shown photographs of men with brief stories about their behavior in various situations, including their reaction to an encounter with a homeless person. Some of the men ignored the homeless man, while others helped him, such as buying him food. A study found that men who showed empathy and kindness were more attractive to women compared to men who showed empathy and kindness. ... >>

Random news from the Archive

MAX9730 Class G Audio Power Amplifier 25.07.2007

Maxim Integrated Products has introduced a new MAX34 class G mono audio power amplifier (UM9730) with a single supply voltage and an output power of 2,4 watts.

MAX9730 is made according to class G architecture and integrates a capacitive supply voltage converter, which allows it to develop 2 times higher power when powered by a Li-Ion battery compared to UMZCH class AB or D. Capacitive converter when powered by a voltage of 2,7... 5,5 V provides a current of up to 500 mA and, when supplied with a voltage of 3,3 V, it is guaranteed to develop a power of 2,4 W at an 8-ohm load.

Using the MAX9730 can significantly reduce the size and cost of the overall solution by eliminating the boost converter and bulky inductance typically required to achieve the same performance.

This makes the MAX9730 especially suitable for cell phones, laptops and other portable devices with limited board sizes. The MAX9730 is rated for operation within the -40 to 85°C temperature range and is available in subminiature lead-free 20-lead UCSPTM (2x2,5mm) and 28-lead TQFN (4x4mm) packages.

Other interesting news:

▪ Football is good for bones

▪ Gaming OLED TVs from LG

▪ Wound healing without scar tissue

▪ Monitor AOC C3583FQ

▪ Next station - aerodynamic

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the site House, household plots, hobbies. Article selection

▪ article Garden furniture from rails. Tips for the home master

▪ article What age can be considered Balzac? Detailed answer

▪ article Stockrose vulgaris. Legends, cultivation, methods of application

▪ article Silk dyeing. Simple recipes and tips

▪ Article Glass cups. Focus Secret

Leave your comment on this article:

All languages of this page

Home page | Library | Articles | Website map | Site Reviews