برزنتيشن عن الماء بالانجليزي قصير

موضوع انجليزي عن الماء للصف الثامن فقرة  برزنتيشن بحث موضوع ملخص جاهز باللغة الانجليزية  انشاء موضوع انجليزي عن ابدا قصير كيفية كتابة موضوع تعبير باللغة الانجليزية توجيهي قواعد كتابة تعبير  بالانجليزي طريقة سهلة لكتابة تعبير بالانجليزي موضوع تعبير انجليزي يصلح لكل المواضيع كتابة تعبير بالانجليزي عن نفسك وصف تعبير انجليزي يصلح لكل المواضيع موضوع انشاء شامل لكل المواضيع موضوع يصلح لجميع المواضيع موضوع تعبير انجليزي جاهز برجراف ينفع لاى موضوع  موضوع انجليزي عن الماء تعبير عن الماء بالانجليزي قصير وسهل فوائد الماء بالانجليزي قصير بحث عن الماء  عبارات  بالانجليزي طويل فوائد الماء للجسم  قصير وسهل بحث انجليزي عن تلوث الماء  فوائد شرب الماء بالانجليزي اهمية الماء بالانجليزي مترجم تعبير عن الماء بالانجليزي ثالث ثانوي برزنتيشن عن الماء بالانجليزي  برزنتيشن عن الماء بالانجليزي قصير  عن المياه المياه المائية خمس سبع ثمان تسع اربع جمل كلمات كلام مقال علمي مقدمة

 Water is the universal solvent on Earth because it can dissolve a lot of substances such as salt or sugar for the most common. If the water dissolves as well it is because of its "Mickey head" shape: a molecule of water consists of an oxygen atom for the head, adorned with two hydrogen atoms forming the ears . This arrangement allows the molecule to be polar, that is to say, negatively charged downwards and positively upwards, thus attracting more and less charged molecules. But in the new state found by physicists from the energy department of the US National Oak Ridge Laboratory, the water no longer has this characteristic and goes into a neutral state. In this new state, water no longer attracts other substances. If it loses its attractiveness it's because the two hydrogen atoms are no longer placed at the right place. When a molecule is under too much pressure, the atoms are placed opposite each other.

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Quantum physics describes the living world on the atomic scale with particular laws. The tunnel effect gives the possibility for an atom to "see" a tunnel open at a moment. Hydrogen can then move in space and physicists can position atoms precisely on the molecule. They then consider that they are in probable areas. The researchers discovered that Mickey's head was turning into a six-petal flower instead. Oxygen, which is the center of the flower, is not impacted by quantum effects. In contrast, each petal represents a potential position for hydrogen atoms. Thus, they can pass from petal to petal through the tunnel effect. They are therefore not localizable over time.

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In order to observe this, the scientists had to block the molecule of water in a crystal. In order for the molecule to be able to undergo the tunneling effect, it must be trapped in a relatively small space. Thus the beryl crystal contains tunnels that can compress the molecule. Once trapped, the researchers sought to radiograph its structure with neutrons. However, the scientists could only determine a fuzzy figure in which the hydrogens are probably present. They thus observed 6 different orientations corresponding globally to the petals. If the experimental conditions seem very specific, this discovery could also concern the water molecules present in humans.

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For example, those inside the cells may be sufficiently confined to enter this state. A possibility that intrigues scientists. Indeed, the water thanks to its polarity, participates in the transport of the substances between the cells, but this task is impossible for this new state. "

The human body can not store water. Indeed, the body permanently eliminates water via excretions (mainly urine), breathing (at the time of expiration), and especially perspiration. The amount of water lost varies with weather conditions and activities: the greater the amount of heat and / or physical activity, the greater the amount of perspiration. Man must therefore each day provide for water, drinking, and eating because the food contains a lot. Breathing also brings water but for a small part.

To maintain the body in good health, water losses must always be offset by inputs.