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Friday, January 29, 2021

THE LAW OF CONSERVATION OF ENERGY - Energy is neither created nor destroyed - The law of conservation of energy is a physical law that states energy cannot be created or destroyed but may be changed from one form to another. Another way of stating this law of chemistry is to say the total energy of an isolated system remains constant or is conserved within a given frame of reference. In classical mechanics, conservation of mass and conversation of energy are considered to be two separate laws. However, in special relativity, matter may be converted into energy and vice versa, according to the famous equation E = mc2. Thus, it's more appropriate to say mass-energy is conserved. One interesting consequence of the law of conservation of energy is that it means perpetual motion machines of the first kind are not possible. In other words, a system must have an external power supply to continuously deliver unlimited energy to its surroundings. It's also worth noting that it's not always possible to define conservation of energy because not all systems have time translation symmetry. For example, conservation of energy may not be defined for time crystals or for curved space times. If a stick of dynamite explodes, for example, the chemical energy contained within the dynamite changes into kinetic energy, heat, and light. If all this energy is added together, it will equal the starting chemical energy value. The law of conservation of energy is a physical law that states energy cannot be created or destroyed but may be changed from one form to another. Another way of stating this law of chemistry is to say the total energy of an isolated system remains constant or is conserved within a given frame of reference.

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Thursday, January 28, 2021

CAN SOMETHING MOVE EVEN FASTER THAN SPEED OF LIGHT? IMPOSSIBLE - Our textbooks usually imply that nothing can travel faster than the light. But, this statement needs to be dissected at a granular level to be understood. The Distant Stars in the unchartered Space cannot be discovered, if we never break the Light Barrier. Hence, there is a need to ask this crucial question, ‘if there is anything that travels faster than light.’ The basis on which these textbooks justify the statement is the special theory of relativity, which explains that this may be achieved only by particles with zero rest mass. The hypothesis of the existence of Tachyons particles put the debate to rest that it is possible for Tachyons to travel at superluminal speeds. However, physicists disagree on the possibility of the existence of such particles, given they do not obey causality, and an infinite amount of energy would be required to move them at such high speeds. The following statement explains the phenomenon appropriately. The faster something travels, the more massive it gets, and the more time slows – until you finally reach the speed of light, at which point time stops altogether. This is the reason why the particles become extremely massive when most of the modern particle accelerators achieve superluminal speeds. The rate at which space is expanding is far greater than the speed of light and that is why light cannot travel across the universe.

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SUPERMOONS - What Is a Supermoon and When Is the Next One? - When the Full Moon or New Moon occurs during the Moon's closest approach to Earth, its perigee, it is often called a supermoon. A Supermoon can be a New or a Full Moon. When a Full Moon takes place when the Moon is near its closest approach to Earth, it is called a Super Full Moon. When there is a New Moon around the closest point to Earth, it is known as a Super New Moon. A Micromoon, on the other hand, is when a Full or a New Moon is near its farthest point from Earth, around apogee. It's also known as a Minimoon, Mini Full Moon, or a Mini New Moon. A New Moon at perigee is also often referred to as a supermoon. However, this event usually garners less attention because a New Moon is invisible from Earth. The Moon's orbit around Earth is not a perfect circle, but elliptical, with one side closer to Earth than the other. As a result, the distance between the Moon and Earth varies throughout the month and the year. On average, the distance is about 382,900 kilometers (238,000 miles). The point on the Moon's orbit closest to Earth is called the perigee and the point farthest away is the apogee. A Supermoon looks larger than a Micromoon. There are no official rules as to how close or far the Moon must be to qualify as a Supermoon or a Micro Moon. Different outlets use different definitions. A Full Moon classified as a Supermoon by one source may not qualify as a Super Full Moon by another.

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