As young tortoises find their way to the sea, why plants do not grow in the daytime and how much to go to a person if he decides to go through the path of the sun’s rays. It’s interesting to know and then tell the children.
Night falls and life stops. Is it? On the contrary, there is so much interesting! We collected facts from the “Great Book of Darkness” about what is hidden from the eyes of a person at night.
When astronauts look at the Earth from the spacecraft at night, they see a lot of lights on its surface – these are big cities. At night they emit so much light that its radiance penetrates the atmosphere into space.
The ancient Greeks were convinced that the human eye emits light, roughly like a flashlight.
Sea turtles lay eggs on land. At night, the hatched babies instinctively rush into the sea – they are led by moonlight, which is reflected from the surface of the water
Bats have very poor eyesight and small eyes, but they can transmit ultrasonic signals that are inaudible to humans. They catch the echo reflected from the objects. This process called “echolocation” helps to avoid obstacles.
Plants grow mainly at night, because during the day they are too busy with the process of photosynthesis.
At night the males of the field cricket make loud noises, rubbing their wings. So they attract females and indicate how large their territory is.
Some unusual plants bloom only at night. For example, the evening primrose reaches 2 m in height. Her flowers begin to open around six in the evening. At the dawn, they are pollinated by night butterflies, and in the daytime they fade.
In the afternoon, the pellicle astringent is unlikely to attract attention – it is an ordinary fungus that grows in groups on the trunks of living and dead deciduous trees. However, at night it starts to glow green due to a special chemical compound.
In the depths of the sea, there are two species of fish with lanterns: black dragon fish and angler fish. Female black dragon fish <…> in length it reaches only 40 cm [but] its mouth is full of sharp, transparent teeth resembling fangs, and the procession hangs from the chin with a glowing ball on its end. The small males of this predatory fish have neither teeth nor an appendage. In general, it is clear who the head of the family is here! On the forehead of the fish-angler there is an appendix with a ball that shines. With his help, she attracts prey and frightens off enemies.
The first electric light bulb was created in 1879 by the American Thomas Edison. She worked for about 40 hours. The filament inside the light bulb does not burn, because there is no air in the glass bulb.