Why dimpled or unsmooth balls used in golf game?

The reason why golf balls have dimples is a story of natural selection. Dimples maximize the distance golf balls travel. Dimpled balls travel up to four times farther than smooth-surfaced golf balls.

In the early days of golf, smooth-surfaced balls were used until golfers discovered that old, bumpy balls traveled longer distances. The science of aerodynamics

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What is Big Crunch theory?

This theory says the universe will one day stop expanding. Then, as gravity pulls on matter, the universe will begin to contract, falling inward until it has collapsed into a super-hot, super-dense singularity. The universe is like a giant souffle. It starts out small, expands as it heats up, and eventually, as the souffle cools, begins to collapse. Big Crunch is the consequence

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What is carbon dating?

Carbon dating or radiocarbon dating is a method to determine the age of plants and fossils or is a radiometric dating method that uses the naturally occurring radioisotope carbon-14 (14C) to determine the age of carbonaceous materials up to about 58,000 to 62,000 years. Carbon has three naturally occurring isotopes,

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What is 'cyclotron'?

What is 'cyclotron'?

The cyclotron, developed by Lawrence and Livingston in 1932, is a machine that accelerates charged particles like protons, so that they can be used in atom-smashing experiments. Because the principles of this accelerator are involved in the cyclic motion of charged atomic particles in a uniform magnetic field, the device is called cyclotron.

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What is a chemical bond?

A chemical bond is one in which atoms of different or same elements combine to become stable. There are two types of chemical bonds — electro-valent bond and co-valent bond. In an electro-valent bond, a metal donates an electron to a non-metal and forms the bond. Such bonds are very strong. A co-valent bond is formed between non-metals only. These are easy to break.

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Is rain water completely pure?

Rain water is considered the purest form of water. Impurities and salts present in water on earth are left behind during vaporisation by the sun. However, the rain water we receive on earth is not necessarily pure, as it brings down impurities and particles present in the atmosphere along with it.

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What is an electron gun?

It is a device in the back of a "cathode ray tube" television or computer monitor (pre-plasma or LCD flat-panel). The electron gun fires a stream of electrons from the back of the TV onto the inside face of the screen, which is coated with a material that glows when hit by electrons. By using powerful magnets to direct the stream across the screen, a series of dots ('pixels') is built over the screen which appears as an image.

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Why does steel glow when it's hot?

Hot steel glows red when hot because its atoms vibrate with a lot of energy. The amount of energy varies in atoms resulting in a range of colours.

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Is it possible to conduct electricity without wires?

Wireless electric power transfer is theoretically possible and it’s in the R&D phase of many leading research labs in the world. Nasa hopes to power its Mars Rover wirelessly in future missions. The basic technology is simple: rectify the received microwave signal using a microwave low-pass filter and a diode. This structure is called rectenna (rectifier + antenna). Many Radio Frequency Identification (RFID) systems work on wirelessly transferred electric power. But to power your mobile system wirelessly, considerable power needs to be discharged which can be hazardous.

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What is administratium?

It is a spoof on administration. Its official definition: Administratium is the heaviest element known to science and was recently discovered at a major US research university. The element has no protons or electrons and thus, has the atomic number 0. However, it does have one neutron, 125 assistant neutrons, 75 vice-neutrons and 111 assistant vice-neutrons, which gives it an atomic mass of 312. These 312 particles are held together by a force that involves the continuous exchange of meson-like particles called morons. Since it has no electrons, administratium is inert. However, it can be detected chemically as it impedes every reaction it comes in contact with.

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What is Loop Quantum Cosmo-logy?

It is the theory on which the concept of the recycled universe is based. Loop Quantum Cosmology (LQC) has been teasing physicists since 2003 with the idea that our universe could conceivably have emerged from the collapse of a previous universe. It theorises that our universe expands and then contracts over and over again, rebirthing for infinity. According to scientists, LQC is based on quantum Riemannian geometry, or loop quantum gravity, which is an attempt at a non-perturbative and background-independent quantization of general relativity.

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Why does steel glow when it's hot?

Hot steel glows red when hot because its atoms vibrate with a lot of energy. The amount of energy varies in atoms resulting in a range of colours.

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What is an electron gun?

It is a device in the back of a "cathode ray tube" television or computer monitor (pre-plasma or LCD flat-panel). The electron gun fires a stream of electrons from the back of the TV onto the inside face of the screen, which is coated with a material that glows when hit by electrons. By using powerful magnets to direct the stream across the screen, a series of dots ('pixels') is built over the screen which appears as an image.

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How is the mass of heavenly bodies measured?

The mass of a heavenly body can be measured by knowing the orbital period (time it takes to complete one orbit around the other body), the distance between two bodies and gravitational constant. The orbital time is inversely proportionate to the square root of the sum of the masses of two bodies and directly proportion distance raised to power three by two.
 

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Why does pure water have no taste or colour?

Physical properties of a compound, such as colour, taste, touch etc. depend on its pH factor. The pH further depends upon the concentration of H+ and OH- ions in that compound. For example, compounds having higher concentration of H+ ions are sour, acids and compounds having higher OH- ion concentrations like bases are bitter. Water has equal concentration of H+ and OH- ions. Thus, it has neither sour nor a bitter taste, and hence is tasteless. Similarly, it is colourless and doesn't have an odour.
  

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