Knowledge connects us all.

Electron affinity of an element is the amount of energy released when 1 mole of electrons is added to the outermost energy level of each of 1 mole of neutral, isolated gaseous atoms of that element, forming 1 mole of gaseous ions each carrying a single negative charge.

Abrar Islam Ador Our skin has special cells called melanocytes. These cells produce a pigment called melanin. This melanin is what determines the color of our skin. The level or amount of melanin depends on ethnicity, heredity, and exposure to sunlight. When melanin production in the body increases, the skin's

Once sperm leaves the human body, it dies upon contact with air. How long sperm survives outside a human or male body depends on certain environmental factors and how quickly the sperm dries out. In the case of in vitro fertilization (IVF), sperm can survive in an incubator for about 72 hours. Mo

Why do dogs get stuck together during mating/intercourse?

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Nishat Tasnim This is called Gleeking. In this process, saliva spurts out from under our tongue. There are thousands of glands in our mouth and the muscles around it. Gleeking usually occurs due to saliva secretion from our sublingual gland. Sometimes saliva secretion can also happen accidentally when pressure is applied to the sublingual gland, cau

Hijra, transgender, third gender, intersex, transsexual—so many terms. Most people get these concepts mixed up, yet knowing them is very important, and I believe it's possible to understand it all just by reading a couple of articles. Today I tried to write a bit about the topic of gender. I've also added references along with it. Bengali

How many days after intercourse a woman can become pregnant generally depends entirely on her physical capacity. But in most cases, you can tell whether you're pregnant within 2 to 3 weeks of intercourse. It's a misconception that having intercourse alone means you can become pregnant. There are certain specific methods that, if followed properly, preg

Spending many years togetherAmerican social psychologist Robert Zajonc compared photos of several couples from their wedding day and photos from 25 years after their wedding day. From his research, he found that even though there was no resemblance between the husband and wife's faces and expressions, after 25 years they surprisingly looked alike!

Nishat Tasnim- Reasons why women gain weight after marriage:-To look beautiful at the time of marriage, they quickly lose a lot of weight, and after marriage their weight quickly increases again. It is often seen that women want to look slim and youthful at the time of their wedding. For this reason, they go on a strict diet starting several months before the wedding. Although this me

It's the dead of night, the clock reads 3 AM. At such a time, thumping and banging sounds come from the roof. As if some ghost is lost in a dance. After a while, the sound of marbles falling is heard. Sometimes the sound of grinding on a grinding stone, or furniture being dragged, is also heard. The body trembles with fear—there must surely be ghosts on the roof! Is that really so? O

Is it good to occasionally go without eating? We know that to stay healthy, the body needs to constantly receive necessary nutrients. But recent science says that occasionally not eating is also good. This allows various problems in the body to resolve on their own; it even protects the human body from deadly diseases like cancer. How does th