Who eats more than others? Detailed answer

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Who eats more than others? Detailed answer

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Who eats more than others?

The African elephant eats up to half a ton of food a day. However, small animals are much more voracious, if we take into account the ratio of their own mass to the mass of food eaten. The shrew is one of the champions: in a day it can eat 3 times more food than it weighs itself.

Author: Mendeleev V.A.

Random interesting fact from the Great Encyclopedia:

What color is the water?

The usual answer to this question is that water has no color, that it is "clear" or "transparent" and that the sea only appears blue because of the sky reflected in it. It's a delusion. The water is really blue. Incredibly faint shade, but still blue. You can see for yourself if you look into a deep hole in the snow or through the thick ice of a frozen waterfall. And if you take a very large and very deep white pool filled with water and look through it, the water will turn out to be blue.

However, this subtle hue does not explain why sometimes the water takes on a striking blue appearance when we look not through it, but at it. The reflected color of the sky definitely plays an important role here. On a cloudy day, for example, the sea doesn't look that particularly blue.

But still, not all of the light that we see is reflected from the surface of the water; some of it comes from under this surface. The dirtier the water, the more light it reflects.

Large bodies of water, such as seas and lakes, tend to have high concentrations of microscopic plants and algae in the water. In rivers and ponds, there is a lot of soil and other solids in suspension.

All of these particles reflect and scatter the light returning to the surface, resulting in the huge variety of colors we see. This explains why the Mediterranean sometimes appears emerald green under bright blue skies.

Test your knowledge! Did you know...

▪ Is there life in the Dead Sea?

▪ Was there discrimination based on hair color?

▪ What Caucasian people partly consists of blacks?

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

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Random news from the Archive

Flyback without optocoupler Maxim Integrated MAX17690 15.12.2018

Maxim has released a new IC MAX17690 - PWM flyback controller, which regulates the output voltage on the primary side (Primary Side Regulation). This approach to regulation reduces the number of components on the board by 30%. Regulation without optocoupler isolation is realized by measuring the reflected output voltage on the primary side.

The microcircuit can be simulated in the online tool from Maxim Integrated - EE-Sim.

Technical specifications:

input voltage range - 4,5...60 V;
implementation of the output voltage regulation algorithm on the primary side;
switching frequency is adjustable in the range of 50...250 kHz;
driver output current +2,0/-4,0 A;
programmable soft start;
built-in protection against short circuit ("hiccupping" mode);
input surge protection;
the chip implements the PSR (Primary Side Regulation) control method.

Typical applications:

isolated DC-DC converters with a wide input;
industrial electronics;
telecommunications;
PLC (Power Line Communication) systems.

Typical application diagram for the MAX17690 chip

The MAX17690 has several support designs:

MAXREFDES1053 (Vin=42-56V, Vout=12V, Iout=2,5A);
MAXREFDES1040 (Vin=18-60V, Vout=54V, Iout=1,1A);
MAXREFDES1103 (Vin = 19-40V, Vout = 24V, Iout = 0,3A).

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