Deep Girdle Women Iliad

Technology, tradition and survival

Bustards (Otis tarda ) with less space to live.

weather clears its habitat, being the man his executor.

While artificial trees reforest our fields clean energy manufacturing false, meaningless traditions continue as stubble burning, and we are gradually pushing aside what remains of nature.

How Mucj Calories In Chow Mein

Why lightning and thunder? CF No. 181

SCIENCE EASY ; ; No. 181

Author: Maria Cristina Chaler.

Series Juguemos to why?

Why lightning and thunder?

All we will have lived a stormy night, thunder accompanied by lightning is shocking and frightening many in this situation, but some restless spirits watching the sky fall in curiosity first " a bright glow and then a huge stampede called thunder?

We may ask: why thunder and lightning?

The answer to this question can be formulated with legends, myths and scientific truths like this.

The electric field is combined in a way which is presented in different ways before our eyes: solid and strong, liquid or gaseous, invisible quicksand, holding life or be abiotic, but everything is just pure electricity that beautifully together.

Atoms make up molecules, in turn, are positive nuclei neutralized by the negatively charged electrons are around and are differentiated only by the amount of electric charge they possess. The 92 elements that make up everything around us are combined thereby generating material diversity of the planet.

If rub the area, perhaps we can start some electrons and affect their neutrality becomes a positive, the opposite may also happen, we transmit and negatively charged electrons. Because of this in the stormy days rubs wind clouds and they are charged large amounts of electricity from one of the two signs, these bodies of water vapor laden attract oppositely charged land by the phenomenon called induction, which allows the download creating what we know as lightning, that may make sense from the cloud to the ground or reverse and accompanied by a loud noise called thunder.

Why the difference in time to see?

The speed of light is 300000km in 1 second (300000km / s) while the sound is 343 meters per second (343m / s), this difference in speed of course we see the light first and last some time we perceive the sound of thunder that such downloading occurs. Remember the note
easy Science No. 14 in which we explained that ...
" rubbing in these phenomena of matter, electric charges are distributed evenly over the surface of bodies, but bodies have pointed accumulate in them and there is what we call the power of the tips : Density (number of charge / area) in them is so great that the charges jump so that the air molecules that surround them are electrically charged with the same sign and repel each other, generating a movement that receives electric wind name.
An application of this power, was the lightning rod, invented by Benjamin Franklin in 1752. It consists of a metal rod with one or more points. Is placed on the roofs of tall buildings attached to a lead wire which in turn is connected to a metal plate is buried at some depth.

When a tag approaches the arrester, it induces charges opposite direction to generate an electric wind ions (charged air particles) that achieve neutralization (removes the charges) and prevents the formation of lightning. If the wind reaches the cloud or the accumulation of charges in it were too great to be neutralized, it will generate a lightning arrester discharge through without causing damage. "

Let think like scientists and watching everything around us with great curiosity.

Man is just a dot on the vast Universal but has an important purpose of being

Materbate Through Thong

Why microwave cooking? CF No. 180

SCIENCE EASY No. 180

Author: Maria Cristina Chaler.

Series Juguemos to why?

Why microwave cooking?


White light is composed of a cluster of energy, some more powerful than others, depending on their frequency (number of waves per second). The higher the frequency the wave energy and consequently more penetrating.
to an electromagnetic wave propagates in space, we can think of as a continuum of peaks and valleys, the wavelength is the distance between peak and peak / off-peak and valley, and longer wavelengths, less frequently, ie, fewer waves pass in one second.
Within the spectrum of white light visible colors are occupying a small space with minimum energy differences among themselves to each other, the blue is more energetic than red. Below the red, infrared rays are invisible but detected with the sense of touch, the feeling of heat produced by above the violet, ultra violet, high energy, also invisible to our eyes, we can not grasp the sense of touch, but our biological body receives and transforms the substance beneath the skin into vitamin D resulting in the brown color so characteristic of exposure to sunlight.


Where are the microwaves within this spectrum?


L as microwaves are low frequency waves that are located below the infrared over radio waves are not very penetrating but enough for a man has found an advanced technology that allows use in daily life and apply them to cook food from the inside as opposed to the traditional oven that cooks from the outside through the infrared rays released by the fire.


Let the core of why


Food has within it a large percentage of water molecules formed by an oxygen atom and two hydrogen atoms (H2O) , which in turn are characterized by an asymmetric electron cloud, caught in the area of \u200b\u200bthe atom oxygen (negative area) rather than the hydrogen (positive area), so it is said to be a molecule with permanent dipole, which causes it to behave in front of a magnetic field as a small magnet and its poles east the opposite pole of the field. As microwaves are able to penetrate the material, its entry generates magnetic fields that cause the water molecules are oriented according to their electrical charges, not static but constantly turning movements. Giran 2, 45 million times a second and this turn generates heat, as any movement of matter, which is transmitted the rest of the substance. Any other molecule that is polar and is present in the food vibrate as the water and help to warm up. As there are millions and millions of molecules vibrating cooking will be much faster than a regular oven where the heat waves (infrared) do not penetrate matter and cooking from the outside in and slowly.
Foods in the regular oven will brown the outside because it dries in the microwave instead, as cooking takes place from within and are not as steamed brown.
Any substance inside holds heat polar molecules by the passage of microwaves substances with little water or polar molecules that do not have inside will not be heated, only warm.
The famous browning dish is made of a material that can be heated by the action of the microwaves and to make contact with dry food and brown surface.
Metals are capable of reflecting the waves, for that reason many microwaves have metal walls to encourage reflection and distribution of the same and the glass front of the device has a metal mesh to prevent the microwaves go abroad. ;
wave generator is called a magnetron, the device emits a piercing through which we can observe in one of the walls of the apparatus, excess metal in the furnace, it is undesirable because if the waves are reflected back to the magnetron too and they burn .
Microwaves electrons to move along the metal when it is pointed, accumulate in them and can escape in the form of sparks that come to burn any flammable substance of the food, it is not advisable to place objects ; metal in the microwave especially those that have sharp points or edges where electricity sparking escape.


And now ... A microwave cooking knowing what it is!

Man is just a dot on the vast Universal but has an important purpose of being

Tip Toungue Got Cut Hurts

Almost like a picture look sad

Fighter ( Philomachos pugnax)

This was reflected in my camera is being feathered. That day it began to rain and happiness was increasing as was wet feathers.

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common Owl (Athene noctua )

For this small nocturnal bird of prey is abundant in our fields, it appeared that the fine rain in the morning was not their biggest problem.