“The Knowledge Library”

Knowledge for All, without Barriers…

An Initiative by: Kausik Chakraborty.
04/02/2023 2:30 PM

“The Knowledge Library”

Knowledge for All, without Barriers……….
An Initiative by: Kausik Chakraborty.

The Knowledge Library

Science & Technology

Measuring Instruments

Instrument Use Bolometer Instrument for measuring radiation by means of the rise in temperature. Hydrometer Instrument for measuring the density of liquids. Hygrometer Instrument for

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Machine and their Use 

1) Altimeter → Scientific instrument to inform altitude 2) ammeter → electric current measurement 3) Anemometer → Measurement of air velocity 4) Audiophone → Improving

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Science and Technology

Paper – III (Technology, Economic Development, Bio-diversity, Environment, Security and Disaster Management) Science and Technology have been a vital exploration in Indian culture since ancient

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Nanotechnology

  Nanotechnology deals with extremely small particles. Nanotechnology is the branch of technology dealing with particles of less than 100 nanometers, particularly management of discrete

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Do You Use Bluetooth?

Bluetooth is a wireless communication technology. Created in 1994, it has changed the way we use many devices since then. Bluetooth connects gadgets so they can be used together. Today,

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What is Aerospace Engineering?

What do aerospace engineers do? They may work on any number of tasks related to flying vehicles. Many are experts in physics and aerodynamics who help design aircraft. Some focus on

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How Do Metal Detectors Work?

Metal detectors can find hidden metal objects. The ultimate score would be a large metal chest filled with long-lost treasure. More likely, though, they’ll find coins dropped by

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How Does a Calculator Work?

Today, calculators are everywhere. Many kids probably take them for granted. After all, any smartphone will have a calculator application right there on the home screen. You can also

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What is Cloning?

Cloning. The word itself probably conjures images from a science fiction movie, in which an evil genius creates clones of himself. With an army of

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What Can Satellites Do?

Satellites are any objects that revolve around (orbit) another object in space. Some satellites are natural, while others are artificial (man-made). The moon is an example of a natural satellite that orbits the Earth.

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Karaoke

A popular legend has it that karaoke got its start over two decades ago in Kobe, Japan. No one knows its origins for certain, but

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How Does Bleach Work?

People bleach their clothes. People with dark hair who want lighter hair may bleach their hair. Some people even bleach their teeth to give themselves a sparkling white smile.

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How Do Touch Screens Work?

Touch screens are electronic visual displays that allow a user to interact directly with what is displayed on the screen, rather than using a pointing device, such as a mouse. Touch screens

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How Do Mirrors Work?

Basically, anything with a smooth surface that reflects almost all of the light that hits it — with only very little light absorbed or scattered

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SCIENTIFIC INSTRUMENTS

♦️ Altimeter:- Measures altitudes. ♦️ Ammeter:- Measures electric current. ♦️ Anemometer:- Measures force and velocity of wind and directions. ♦️ Audiometer:- Measures intensity of sound.

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How Does 3D Work?

3D stands for three-dimensional. “Regular” movies are 2D, or two-dimensional. What are dimensions, and what’s the difference? Dimensions are properties of space. They refer to extension in a particular

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How Does an X-Ray Work?

In 1895, German physicist Wilhelm Roentgen was experimenting with electricity in a special tube. He wanted to find out how electricity would act in a vacuum. For that

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What is Anesthesia?

The word anesthesia comes from the Greek words for “without” and “sensation.” If a potentially painful procedure is in your future, then you may certainly prefer to experience it with anesthesia and,

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Genetically Engineered

GMO stands for “genetically modified organism.” These are plants, animals, or other living things whose genetic material (DNA) has been altered by humans using a

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इलेक्ट्रोलाइटिक सेल और इलेक्ट्रोलिसिस

️ इलेक्ट्रोलिसिस एक रासायनिक प्रतिक्रिया प्राप्त करने के लिए इलेक्ट्रोड के माध्यम से एक प्रत्यक्ष प्रवाह पारित करने की एक प्रक्रिया है। जब चुना हुआ

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How Do 3D Printers Work?

A 3D printer isn’t anything like a regular printer, however. Instead of printing a simple text document on a single piece of paper, 3D printers can “print” a real three-dimensional

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