| हिन्दी | अंग्रेज़ी | परिभाषा |
|---|
| अणु | molecule | यह द्रव्य का वह सबसे छोटा कण है जिसमें किसी द्रव्य को विभाजित करने के वावजूद भी उस द्रव्य की रासायनिक पहचान अपरिवर्तित रहती है। अर्थात द्रव्य का सबसे छोटा कण जो रासायनिक अभिक्रिया में भाग लेता है। |
| अनुनाद | resonance | जब किसी कम्पन करने वाले तार, लकड़ी या किसी अन्य युक्ति की स्वाभाविक आवृति उससे लगे हुए वातावरण की आवृति के बराबर हो जाती है, उस अवस्था को अनुनाद कहते हैं। |
| अभिक्रिया | reaction | दो या अधिक रसायन मिलकर जब एक या अधिक भिन्न रसायन बनायें तो उसे रासायनिक अभिक्रिया कहते हैं। |
| अमिश्र | immiscible | जो आपस में मिलकर एक समान नहीं हो सकते |
| अल्कली | alkali | क्षारीय गुणों वाला पदार्थ |
| आक्सीकरण | oxidize | मोटे तौर पर आक्सीजन के साथ किसी तत्व या यौगिक की अभिक्रिया को आक्सीकरण कहते हैं। |
| आयन | ions | Atoms that carry an electric charge, either positive or negative. If an atom gains an electron it takes on a negative charge. If the atom loses an electron it takes on a positive charge. |
| आर्द्रता | humidity | the amount of water vapor in the air. |
| आवेश | charge | the state of an atom that has lost or gained an electron. |
| आसवन | condensation | when a substance changes state from a gas to a liquid. |
| इमल्सन | emulsion | tiny droplets of one liquid floating in another liquid, such as oil droplets floating in water. |
| उत्प्लावन बल | buoyancy | the ability to float, or in more technical terms |
| उर्जा | energy | the name given to the ability to do work. |
| एलेक्ट्रान | electrons | a negatively charged subatomic particle. Electrons are found at varying distances from a atom's nucleus. They make up almost the entire volume of a atom but only account for a small part of the atom's mass. Compare to protons. |
| कारबन डाई आक्साइड | carbon dioxide | a heavy colorless gas that does not support combustion, dissolves in water to form carbonic acid, is formed in animal respiration and in the decay or combustion of animal and vegetable matter, and is absorbed from the air by plants in photosynthesis. |
| कोण्डा प्रभाव | coanda effect | described by Henri Coanda, a Romanian scientist, in the 1930's. This effect describes the tendency of moving air of fluids to follow the nearby curved or inclined surface. |
| अम्ल | acid | खट्टा स्वाद वाला, धातुओं तथा अन्य को गलाने में सक्षम, लाल लिटमस कागज को नीला कर देता है, क्षार का बिलोम |
| क्षार | base | a bitter tasting substance (and often slimy) |
| गुरुत्व | gravity | the attractive central gravitational force exerted by a celestial body such as earth. |
| घनत्व | density | the ratio of the mass of a body to its volume, usually expressed as its specific gravity. |
| घर्षण | friction | the resistance that occurs when two objects rub together. |
| चालक | conductor | a thing that transmits heat, electricity, light, sound or other form of energy. |
| चुम्बकत्व | magnetism | the force that electric currents exert on other electric currents. |
| जड़त्व | inertia | the tendency of a body to remain at rest or stay in motion unless acted upon by an external force. |
| टर्बाइन | turbine | pronounced TUR bihn or pronounced TUR byn, is a device with a rotor turned by a moving fluid, such as water, steam, gas, or wind. A turbine changes kinetic energy (energy of movement) into mechanical energy (energy in the form of mechanical power). |
| ट्रान्सफ़ार्मर | transformer | a device that changes the voltage of electricity. |
| डेसीबेल | decibel | a unit of measurement for sound, it measures the loudness or volume of the sound waves. |
| तड़ित | lightening | a powerful flash of electricity between the negative electrical charges in clouds or between a cloud and the ground. |
| तत्व | element | a basic chemical substance in which all the atoms are the same, and different from the atoms of any other substance. |
| दाब | pressure | the application of a steady force upon another object. |
| दाबमापी | barometer | a device used to measure the pressure of the atmosphere. The barometer unit of measure is called millibars. |
| द्रब्यमान/संहति | mass | often defined as the amount of matter in an object. Note that mass and weight are not the same thing. Weight is the force on an object due to the gravitational pull of a planet or other heavenly body. Mass on the other hand, remains constant, no matter where it is. |
| द्वीतियक बैटरी | secondary battery | a battery that can be recharged. |
| परमाणु | atoms | किसी पदार्थ का सबसे छोटा कण जो बिना परिवर्तित हुए किसी रासायनिक क्रिया में भाग ले सकता है। परमाणु के केन्द्र में नाभिक होता है जिसमें प्रोटान और न्यूट्रान होते हैं, तथा एलेक्ट्रान इस नाभिक के चारो ओर चक्कर लगाते हैं। |
| परावर्तन | refraction | the bending of a wave path, as of light or sound, at the boundary between two different mediums. |
| परिपथ | circuit | the path followed by an electric current. Electricity must flow in a circuit to do useful work. |
| प्राणवायु/आक्सीजन | oxygen | a colorless, odorless, tasteless gas that is the most plentiful element in the Earth's crust. It was discovered in 1772 by Swidish chemist Carl Wilhelm Scheele. |
| प्रेरण | induction | the process by which an object having electrical or magnetic properties produces similar properties in a nearby object, usually without direct contact. |
| प्रोटान | protons | a positively charged subatomic particle. Protons, along with other subatomic particles called Neutrons, make up the nucleus of a atom. The number of protons in an atom is called the atomic number of the element. Compare to electrons. |
| बर्नौली प्रभाव | bernoulli effect | described by Swiss mathmetician Daniel Bernoulli in 1738. Bernoulli's theorem (sometimes called the Venturi effect) implies that a decrease in fluid pressure is associated with an increase in the fluid's velocity (speed). It's the basics for aircraft wing design explaining that air flowing over the upper, curved part of the wing moves faster than the air on the underside of the wing so that the pressure underneath is greater and hence causes lift. |
| बैटरी | battery | a device that produces electricity by means of chemical reaction. A battery consist of one or more units called electric cells. Each cell has all the chemicals and parts needed to produce an electric current. |
| भार | weight | the force on an object due to the gravitational pull of a planet or other heavenly body. |
| रासायनिक अभिक्रिया | chemical reaction | a process by which one substance is chemically converted to another. Chemical reactions involve the formation or destruction of bonds between atoms. |
| वायुमण्डल | atmosphere | पृथ्वी के चारो ओर हवा का घेरा; पृथ्वी के निकट यह घना है और ज्यों-ज्यों उपर चलते जाते हैं यह विरल होते-होते बाहरी अन्तरिक्ष में निर्वात (वायु-विहीन) हो जाता है। |
| वायुवेगमापी | anemometer | एक युक्ति जो हवा की चाल मापने के काम आती है। |
| विद्युत अपघटन | electrolysis | splitting a substance into the separate chemicals that make it up, by passing an electric current through it. |
| विद्युत जनित्र | dynamo | a device that creates electricity by turning around a magnet near a coil of wire. |
| विद्युत धारा | current | the movement or flow of electric charges |
| विद्युत धारा | electric current | see current. |
| विभव | potential | the amount of electrification of a point with reference to some standard. |
| विशिष्ट घनत्व | specific gravity | the ratio of the density of a body to the density of water, the latter being taken as unity. |
| विसरण | osmosis | the natural passage or diffusion of water (or other liquids) through a semi permeable membrane. |
| वोल्टता | voltage | differences in potential (or electric state) related to the electrical forces that 'push' charges through a conductor. Can be thought of as the pressure which pushes electricity through a wire. |
| संधारित्र | capacitor | a device that stores electric energy in the form of an electric charge. |
| संवेग | momentum | the speed or force of something that is moving. |
| सूक्ष्म नलिका प्रभाव | capillary action | the tendency of liquids to move into or out of tiny, hairlike passages. |
| सेल्सियस | Celsius | a unit of measurement for temperature. Water freezes at 0°C (zero degrees Celsius) and boils at 100°C (100 degrees Celsius). |
| स्थिर विद्युत | static electricity | describes the situation where objects carry a charge. |
| हिमांक | freezing point | the temperature at which a liquid becomes a solid. Increased pressure usually raises the freezing point. |
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