What mammals can see in ultraviolet light? Detailed answer

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

What mammals can see in ultraviolet light? Detailed answer

Big encyclopedia for children and adults

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

Did you know?

What mammals can see in ultraviolet light?

Reindeer in winter are able to capture the near ultraviolet (wavelength from 300 to 400 nm). Snow reflects such radiation, and many important objects for deer, such as wolf fur, urine trail or reindeer moss, absorb. For human vision, a light-colored wolf will be faintly distinguishable against the background of snow, but the deer's eye will perceive it as a highly contrasting spot.

Authors: Jimmy Wales, Larry Sanger

Random interesting fact from the Great Encyclopedia:

What is the continental shelf?

When you talk about the Atlantic Ocean, you only mean the top layer of water. But what is under water, at the bottom of the ocean? Let's imagine that we are traveling from New York east across the Atlantic Ocean. This is the picture of the bottom that will open up to us. For about 320 km, the bottom gradually lowers. It is usually flat, but sometimes has V-shaped valleys and canyons. This is the continental shelf, part of the North American continent. It so happened that it is too low to protrude above the sea.

At a depth of about 360 m, the shelf suddenly ends. It no longer descends smoothly, but breaks off. This is the edge of the continent, or the slope that goes all the way to the bottom of the ocean. Descending along this slope, we find ourselves at a depth of about 4 km. Now we are crossing the ocean at its deepest point. Here the bottom of the ocean is flat. It is called the deep sea plain. Such plains cover about a third of the ocean area and are one of the most flat places on Earth.

If we continue to move along the ocean, then soon we will reach the place of underwater elevations. Some of them look like hills. This is the Mid-Atlantic Ridge. Somewhere around the middle of the range, the hills become higher and steeper, and some rise like mountains to a height of about 1500 m from the bottom. Between the mountains there are deep-water valleys with a flat surface. Right in the middle of the ridge lies the largest underwater valley. It looks like a rift between two parts of the ridge.

If we continue to the east, we will again cross the deep-sea plain, which gently rises to the continental shelf off the coast of Portugal. This is the picture of the bottom of the Atlantic Ocean.

Test your knowledge! Did you know...

▪ When did English appear?

▪ When did the first parliament appear in Russia?

▪ What language does Satan speak in the Scots translation of the New Testament?

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:

The existence of an entropy rule for quantum entanglement has been proven 09.05.2024

Quantum mechanics continues to amaze us with its mysterious phenomena and unexpected discoveries. Recently, Bartosz Regula from the RIKEN Center for Quantum Computing and Ludovico Lamy from the University of Amsterdam presented a new discovery that concerns quantum entanglement and its relation to entropy. Quantum entanglement plays an important role in modern quantum information science and technology. However, the complexity of its structure makes understanding and managing it challenging. Regulus and Lamy's discovery shows that quantum entanglement follows an entropy rule similar to that for classical systems. This discovery opens new perspectives in the field of quantum information science and technology, deepening our understanding of quantum entanglement and its connection to thermodynamics. The results of the study indicate the possibility of reversibility of entanglement transformations, which could greatly simplify their use in various quantum technologies. Opening a new rule ... >>

Mini air conditioner Sony Reon Pocket 5 09.05.2024

Summer is a time for relaxation and travel, but often the heat can turn this time into an unbearable torment. Meet a new product from Sony - the Reon Pocket 5 mini-air conditioner, which promises to make summer more comfortable for its users. Sony has introduced a unique device - the Reon Pocket 5 mini-conditioner, which provides body cooling on hot days. With it, users can enjoy coolness anytime, anywhere by simply wearing it around their neck. This mini air conditioner is equipped with automatic adjustment of operating modes, as well as temperature and humidity sensors. Thanks to innovative technologies, Reon Pocket 5 adjusts its operation depending on the user's activity and environmental conditions. Users can easily adjust the temperature using a dedicated mobile app connected via Bluetooth. Additionally, specially designed T-shirts and shorts are available for convenience, to which a mini air conditioner can be attached. The device can oh ... >>

Energy from space for Starship 08.05.2024

Producing solar energy in space is becoming more feasible with the advent of new technologies and the development of space programs. The head of the startup Virtus Solis shared his vision of using SpaceX's Starship to create orbital power plants capable of powering the Earth. Startup Virtus Solis has unveiled an ambitious project to create orbital power plants using SpaceX's Starship. This idea could significantly change the field of solar energy production, making it more accessible and cheaper. The core of the startup's plan is to reduce the cost of launching satellites into space using Starship. This technological breakthrough is expected to make solar energy production in space more competitive with traditional energy sources. Virtual Solis plans to build large photovoltaic panels in orbit, using Starship to deliver the necessary equipment. However, one of the key challenges ... >>

Random news from the Archive

Health record 19.05.2010

Although this sport has not yet been officially recognized, there are amateurs competing with each other in who can last the longest without breathing and get into the Guinness Book of Records for this. The latest record, set in February 2010, belongs to the Austrian Peter Kolat: he lay face down on the surface of a swimming pool for 19 minutes and 21 seconds (19 seconds longer than the previous record holder).

How safe are these exercises? Physiologists from the University of Lund (Sweden) gathered nine trained breath-holders in the laboratory and asked them not to breathe for more than five minutes. At the same time, blood tests were done on the test subjects. It turned out that by the end of the experiment, the oxygen content in the subjects' blood fell by almost 80% - more than it happens with a stroke.

In addition, a protein appeared in the blood, which is normally contained in brain cells and is released into the blood only when these cells are damaged. The blood returned to normal only after two hours.

Other interesting news:

▪ Music for aliens

▪ Tablet Asus ExpertBook B3

▪ Linear regulator TPS7A45

▪ Cold is more dangerous than heat

▪ New carbon capture system

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the site Tools and mechanisms for agriculture. Article selection

▪ article Watch September. Popular expression

▪ article How did the shortest street in the world appear? Detailed answer

▪ article Providing first aid for solar heat stroke

▪ article Amateur metal detector. Encyclopedia of radio electronics and electrical engineering

▪ article Electrical installations in hazardous areas. Electric lifting mechanisms. Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:

All languages of this page

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