Why are camels able to go without water for a long time? Detailed answer

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Why are camels able to go without water for a long time? Detailed answer

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Why are camels able to go without water for a long time?

Camels are the only mammals that can live without water for 10-14 days in summer and up to two months in winter (losing up to a quarter of their body weight in the process). They store water not in their humps, as previously mistakenly believed, but in the tissues and cells of their entire body.

At the same time, camels are also able to raise their body temperature by 6-7 degrees Celsius. This allows them to virtually eliminate the use of water for sweating, through which many other mammals, including humans, maintain their body temperature in the heat.

Author: Kondrashov A.P.

Random interesting fact from the Great Encyclopedia:

Why did the ace of cards go from one to the highest card?

Ace in English is called "ace", which, in turn, comes from the old French word "as" with the meaning "one". Historically, the ace in the playing deck had the lowest value and was denoted by the sign 1, but over time, on the contrary, it became the dominant card. And in games such as poker or blackjack, the player himself can choose the value of the ace - as the highest or as one. The French Revolution had a great influence on the advancement of the ace up - it began to symbolize the supremacy of an ordinary person over kings. In addition to cards, the word "as" began to be applied to people who have reached the highest degree of skill in their profession.

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Germanan is a rival of graphene 18.05.2013

Germanan (Germanane) - a germanium monolayer - can be in demand in electronics due to its unique properties and ease of manufacture. Researchers at Ohio State University in Columbus have developed a new method for depositing germanium in monolayers (i.e., layers one atom thick), while achieving a 10-fold increase in efficiency compared to silicon and creating a simpler manufacturing method than with next generation materials such as graphene (a monolayer of carbon atoms).

"We have been able to fabricate a germanium analogue of graphene, i.e. monolayers that bond with hydrogen in the same way as graphene, but which are much easier to manufacture," said Ohio University professor Joshua Goldberger. "In the process, we will transform from a material with an indirect bandgap to a material with a direct bandgap, which allows it to be used for optical purposes as well.

Goldberger claims to have synthesized for the first time millimeter-sized pure crystal lattices of hydrogen-bonded germanium (GeH) by topochemical deintercalation of GaGe2. Goldberger describes this material as a layered van der Waals substance similar to bonded graphene (CH). Goldberger named his material "germanan" to indicate the resemblance to a monolayer version of graphene called grafane.

Aside from the fact that the new material is based on germanium rather than carbon like graphene, the most significant difference is that germanan will be easier to grow using standard semiconductor equipment than graphane. Goldberger predicts that the new materials will be used in next-generation optoelectronic devices and advanced sensors, as calculations show that electron mobility will be 5 times better than bulk germanium (10 times higher than silicon) with a band gap 1,53 eV, which is slightly more than that of gallium arsenide.

Graphene researchers have already demonstrated that the electronic properties of semiconductor monolayers can be significantly better than those of bulk materials, and numerous efforts have been expended to create functional monolayers of differently connected crystal structures. The high carrier mobility comes at the expense of the excellent quality of the ultrathin topology, but if these monolayers are liganded for a specific application, ultrathin materials can also become more sensitive to sensory applications than bulk materials.

Historically, it was germanium that became the first semiconductor used in electronics. It happened back in 1947 at AT&T Bell Labs. And only decades later, researchers managed to overcome a number of problems to make it possible to use silicon in electronics. It seems that the situation with new monolayer materials for electronics may repeat history.

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