#rainsoundsforsleeping#thundernoise#burning
My instagram naturerelaxatio...
What is a thunderstorm?
Not really
Zeus and not Perun send their lightning arrows to Earth.
A thunderstorm is a complex atmospheric electrical phenomenon that is accompanied by lightning, thunder, rain, often gust or hail.
The formation of thunderstorms is associated with the development of strong cumulus clouds, which form due to the large difference in air temperature near the ground and at a certain height in the atmosphere. In these clouds across
strong upward movements and turbulence of air electrify and positively and negatively charged ions appear.When y
the strength of the electric field of the clouds reaches its maximum: there is a lightning bolt (electric discharge), accompanied by thunder.
The electrical conductivity of the air is very low. Therefore, there is no gradual redistribution of the electrical potential in the air. Often
in one part of the cloud accumulates a significant positive charge,
in the other - negative. Tension in the mounds
electric field, i.e. the potential difference per unit of distance,
it can be hundreds of thousands of volts per meter.
When the field strength
it reaches a critical value (25−50) • 10³V / m and more, the potential difference is equalized by the electric discharge. This is lightning.
Lightning is made up of several consecutive digits that
follow each other along a winding path with branches that
called the lightning channel. Discharges can occur between different parts of the clouds, between nearby clouds, or between the cloud and the Earth. About 40% of discharges occur between the cloud and the Earth, exactly
in this case we say: "The thunder has struck".As a result, this air
in the canal it shines with a dazzling pink-purple glow.
The length of the radius is 2-3 km to 20-30 km, the diameter is several tens of centimeters. The instantaneous heating of the air leads to its explosive expansion, which creates a sound effect - thunder. Thunder is delayed in relation to lightning as the speed of light reaches
300,000 km / s, and the speed of sound is only 330 m / s.The sound of individual lightning pulses propagates with a delay. In addition, sound is reflected from different parts of the Earth and
clouds. Therefore, after the main thunderclap for a while, one can still hear
roar. We are informed of distant thunderstorms by a sight - lightning
near the horizon line without thunder.
16 ноя 2020
