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02/08/2022

28/07/2022

A satellite is an object in space that orbits or circles around a bigger object. There are two kinds of satellites: natural (such as the moon orbiting the Earth) or artificial (such as the International Space Station orbiting the Earth).
A satellite is a moon, planet or machine that orbits a planet or star. For example, Earth is a satellite because it orbits the sun. Likewise, the moon is a satellite because it orbits Earth. Usually, the word "satellite" refers to a machine that is launched into space and moves around Earth or another body in space.
Earth and the moon are examples of natural satellites. Thousands of artificial, or man-made, satellites orbit Earth. Some take pictures of the planet that help meteorologists predict weather and track hurricanes. Some take pictures of other planets, the sun, black holes, dark matter or faraway galaxies. These pictures help scientists better understand the solar system and universe.
Still, other satellites are used mainly for communications, such as beaming TV signals and phone calls around the world. A group of more than 20 satellites make up the Global Positioning System, or GPS. If you have a GPS receiver, these satellites can help figure out your exact location.

28/07/2022

भारत का सुदूरस्थ उत्तरी बिंदु सियाचिन ग्लेशियर के निकट इंदिरा कोल ( लद्दाख ) है।

27/07/2022

-The acceleration produced in a body due to the force of gravity is called Acceleration due to gravity (g) and its value is 9.8 m/s2.
-Acceleration due to gravity is independent of the shape, size and mass of the body.
-Escape velocity is the minimum velocity with which an object just crosses the earth's gravitational field and never returns. Escape velocity at the earth's surface is 11.2 km/s.
-Escape velocity at the moon's surface is 2.4km/s. Due to low escape velocity, there is no atmosphere on the moon.
- The value of g decreases with height depth from the earth's surface.
- g is maximum at poles.
- g is minimum at the equator.
- g decreases due to the rotation of the earth.
- g decreases if the regular speed of the earth increases if the angular speed of the earth decreases.
- The acceleration due to gravity at the Moon is one-sixth that of the earth.So, the weight of a person on the surface of the Moon will be one-sixth of his actual weight on the earth.
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27/07/2022

भारत का सुदूरस्थ दक्षिण बिंदु इंदिरा प्वाइंट ( ग्रेट निकोबार अथवा बड़ा निकोबार द्वीप ) है एवं मुख्य भूमि पर दक्षिणतम बिंदु ' कन्याकुमारी ' ( तमिलनाडु )है।
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26/07/2022

26/07/2022

Gravity, also called gravitation, in mechanics, is the universal force of attraction acting between all matter. It is by far the weakest known force in nature and thus plays no role in determining the internal properties of everyday matter.

26/07/2022

भारत का भूगोल ( Geography of India )
- भारत का भूगोल या भारत का भौगोलिक स्वरूप से आशय भारत में भौगोलिक तत्वों के वितरण और इसके प्रतिरूप से है जो लगभग हर दृष्टि से काफ़ी विविधतापूर्ण है। दक्षिण एशिया के तीन प्रायद्वीपों में से मध्यवर्ती प्रायद्वीप पर स्थित यह देश अपने 32,87,263 वर्ग किमी क्षेत्रफल के साथ विश्व का सातवाँ सबसे बड़ा देश है।
- पूरी तरह उत्तरी गोलार्ध में स्थित भारत की मुख्यभूमि 8 डिग्री 4 मिनट और 37 डिग्री 6 मिनट उत्तरी अक्षांश और 68 डिग्री 7 मिनट तथा 97 डिग्री 25 मिनट पूर्वी देशान्तर के बीच स्थित है ।
-भारत की स्थिति उत्तरी गोलार्ध एवं पूर्वी देशांतर में है।
-भारत की आकृति चतुष्कोणीय है।
-भारत का अक्षांशीय विस्तार 8°4′ से 37°6′ उत्तरी गोलार्ध में है ।
-देशांतरीय विस्तार 68°7′ से 97°25′ पूर्वी देशांतर में है ।
-भारत का विश्व में क्षेत्रफल की दृष्टि से सातवां एवं जनसंख्या की दृष्टि से दूसरा स्थान है।
-मुख्य भूमि चार भागों में बंटी है - विस्तृत पर्वतीय प्रदेश, सिंधु और गंगा के मैदान, रेगिस्तान क्षेत्र और दक्षिणी प्रायद्वीप।

25/07/2022

power is the amount of energy transferred or converted per unit of time. In the International System of Units, the unit of power is the watt, equal to one joule per second. In older works, power is sometimes called activity. Power is a scalar quantity.
SI unit: Watt
Types
There are four main types of power transmission – mechanical, electric, hydraulic and pneumatic.
The most common mechanical power transmission methods in use in the engineering industry today are:
Shaft couplings.
Chain drives.
Gear drives.