Do candies grow on trees?
Do not rush to answer "no" to the question in the title. Turns out candy can grow on trees. And these trees are called "candy", and in a scientific way – sweet fasting. Homeland goveniya – Southeast Asia. These trees are also cultivated on the Caucasian coast of the Black Sea, as well as in the area of the city of Geokchay in Azerbaijan. Govenia fruits are small dry balls the size of a pea. But it was not the fruits that glorified fasting, but thick juicy twigs – stalks, at the ends of which these balls are located. If such a tree is shaken well at the end of autumn, “candies” will fall from it in whole bunches (each tree can produce up to 35 kg of “candies”). They are sweet (47% sucrose) and taste very much like raisins with a hint of rum, and therefore are loved by both children and adults.
Cakes on the trees
“Well, this is fiction,” you say. "Cookies can't grow on trees." Well, you underestimate the wealth of the green world of our planet. On the islands of Oceania there is a separate type of tropical tree – "cakes". Yellowish fruits grow in abundance on them, which in their appearance and taste are very reminiscent of sweet cakes. Local residents do not have to go to the store for sweets, for this it is quite enough to go to the nearest "cake" tree.
What burns in the sun?
Some people think (scientists used to think so too) that sunlight and heat are the result of burning some substances in the Sun. However, the surface of the Sun has been hot for hundreds of millions of years, and nothing can burn for that long.
According to modern scientists, our luminary emits heat as a result of processes similar to those that occur during the production of atomic energy or the explosion of an atomic bomb, that is, the Sun turns matter into energy.
If we compare this process with combustion, then it should be noted that during combustion one form of matter passes into another, and when matter passes into energy, a minimum amount of matter is needed to produce a huge amount of energy.
Sun and dust
The sun is especially beautiful at sunset. And we often say at this time: "What a beautiful sun." But in fact, it’s not the sun that is “to blame” for this beauty, which is the same in the morning, afternoon and evening.
And what makes the sunset so beautiful is the most ordinary dust.
As you know, a sunbeam consists of all the colors of the rainbow. At sunset, when the sun is near the horizon, we see it through a thick layer of dust through which only red and orange colors (which have long wavelengths) can pass, and violet, blue and green scatter, mix and make gray twilight glow all over the sky.
As you can see, dust can also be useful.
They used to think, and many still think now, that snow is frozen droplets of water, and that it comes from the same clouds as rain. However, it is not. Snow will never be born from water droplets. Water droplets can become hailstones, which sometimes fall along with rain or during a thunderstorm. But water droplets never turn into snowflakes. Snow forms differently.
Water vapor rises very high above the ground, into the realm of cold, and here tiny ice-snowflakes immediately form from the water vapor. At first they are very small, but gradually the hexagonal crystals become those amazing snowflakes that, having gathered in flakes, fall to the ground.
An ordinary snowflake falling from the sky is a symbol of the eternity of Nature. Originating in the sky, it falls to the Earth to melt and be reborn again, but in a different form.
Usually snowflakes are depicted as six-pointed stars. However, there are different shapes of snowflakes. The International Commission on Snow and Ice (and, it turns out, there is one), has identified several groups depending on the conditions for their formation. For example, low, moist clouds and light winds produce voluminous tree-shaped snowflakes, while cold, dry clouds produce needle-like structures.
But in any case, each snowflake is a unique creation of Nature. Interestingly, the research of scientists confirm rather than refute the opinion that there are no two absolutely identical snowflakes.
It has been calculated that at least a million different levels of temperature and humidity are possible in the atmosphere, which creates the conditions for the appearance of 105 million (10 to the power of five million) possible combinations. For the formation of two identical snowflakes, it is necessary that they have the same core configuration, that, when falling, they form under the same conditions at the same time, and that they collide in the same way on their way. And then they still need to fall into the hands of the same scientist.
The same scientists calculated that to cover half a meter of the earth with a 25-centimeter layer of snow, it would take a snowfall of more than a million snowflakes.
Translated from Greek, "eucalyptus" means "I cover well", that is, I give a large shadow. But with a shadow, just at the eucalyptus, things are not in the best way.
Why is there no shadow under the dense branches of eucalyptus trees? Everything is explained by the peculiarities of the placement of their narrow leaves, which always turn to the sun not with the entire surface, but with ribs. And because the sun's rays pass through the leaves, as through the blinds.
What does the piano sound like?
The question "What does the piano sound like?" may seem strange. “Strings, of course,” is the usual answer. The answer is correct, but only the strings sound very quiet, and their sound is not heard even at the other end of the room. And the beauty and power of sound does not depend on the strings, but on the soundboard (an irregularly shaped rectangle glued together from small oblong planks). By pressing the keys of the piano, we make the strings vibrate, and those, in turn, the soundboard, which vibrates a significant mass of air. We perceive these air vibrations as the sound of a piano or grand piano.
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