The philosophy of physics in the idiom or colloquial phrase hasty haste hasten

Without combustibles, the fire will be extinguished.

Fishing for the moon in the waterThe light is refracted in the water to appear the shadow of the moon.

When in the water, f float g melons, that is, melons should be floated. Plums, peaches and other fruits have kernels in them, so when they are put into the water, they will sink to the bottom of the water.

Waves follow the waves: Waves are produced by vibrations, and waves travel energy and vibrational forms. If the water is not moving, the floats on the surface of the water will vibrate up and down in their original position with the waves.

If the water is flowing, then the floats flow horizontally along with the water in addition to vibrating. That is, the floating object vibrates up and down and moves horizontally. Drifting with the flow describes this movement very accurately.

Acoustics High and low: The higher the frequency, the higher the pitch of the sound, and of course the fewer people can sing along.

A long whistle, the mountains and valleys respond: this is the sound that is reflected many times between the valleys, forming a loud echo.

Extrachord sounds: This refers to sounds that are outside the range of human auditory frequencies (e.g., ultrasound, infrasound) that do exist and cannot be heard.

Listen to their voices to know who they are: this is because each person has a different timbre of the sound they make.

But when you hear it, you don't see it: this is because in the process of sound propagation, when the size of the obstacle is smaller than the wavelength, obvious diffraction can occur, and light travels in a straight line in the same substance.

Heat Freezing three feet, not a day's cold: water freezes below 0. The water is exothermic in the process of freezing. Freezing three feet must be a long-term low temperature environment, so that a large amount of water or ice is heated, forming a large amount of low temperature ice.

Real gold is not afraid of fire: the melting point of gold is 1064 and the temperature of the flame is generally about 800, so gold will not be melted.

Instead of raising the soup to stop boiling, it is better to draw the bottom of the kettle: the condition for the liquid to boil is that the temperature reaches the boiling point and can continue to absorb heat. The raised soup dissipates heat into the air and the temperature drops, but the water boils again immediately after returning to the pot to absorb the heat, and it does not disconnect the heat source, and after the pumping, it can fundamentally stop the boiling of the liquid.

Boiling water does not sound, ringing water does not boil: Before the liquid boils, due to convection, the bubbles in the water rise while vibrating, and most of the bubbles are in.

When the water is under pressure, it bursts and the sound is loud, while when it boils, the water temperature is equal up and down, and the bubbles only burst when they rise to the liquid level, and the sound is small.

Snow does not cool and snow cools: Because the water vapor in the air emits heat when it condenses into snow, and the snow absorbs heat when it melts, the temperature of the air will change accordingly.

Ruixue Mega Year: Because snow is a poor conductor of heat, when it is covered on crops, it can prevent heat conduction and air convection very well, so it can play a role in heat preservation.

Optical fishing for the moon in the water is empty (what you can't pick is the moon in the mirror, what you can't catch is the flower in the water): because the calm water surface is equivalent to a flat mirror, a flat surface.

The mirror is like a virtual image, so of course it is in vain.

Pigs do not abstain from looking in the mirror —

A leaf obstructs the eyes, and Mount Tai is not visible - the light travels in a straight line.

Do you know that the proverb of the nuclear idiom contains the change of the object of the suspicion?

Gather sand into a tower, and accumulate a lot.