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What is thermometry?

Thermometry The branch of heat relating to the measurement of the temperature of a body is called thermometry. The thermometer is an instrument used to measure the temperature of a body. The essential requisites of a thermometer are given as under:  1) Construction, 2) Calibration, and 3) Sensitiveness. For the construction of a thermometer, the proper choice of a substance, whose physical property varies uniformly with rising in temperature, is essential. 1) Construction The physical property of a substance plays an important role in the construction of a thermometer. In a mercury thermometer, the principle of expansion of mercury with rising temperature is used. The platinum resistance thermometer is based on the principle of the change in resistance with a change in temperature. The gas thermometer is based on the principle of change in volume or pressure with a change in temperature. 2) Calibration  When a thermometer is constructed, it should be properly calibrated. The standa

Efficiency

Efficiency Efficiency: The ratio of the amount of work we get from an engine given is its efficiency. Effective Energy: The energy that we get from an engine is its effective energy. What do you mean by 70% efficiency of a pump? 70% efficiency of an engine means 100 J input of energy in the engine yields 70 J efficient energy and the rest of 30 J energy is wasted. Secondary Physics Chapter - 1 :  Physical Quantities and Their Measurements Chapter - 2 :  Motion Chapter - 3 :  Force Chapter - 4 :  Work, Power, and Energy Chapter - 5 :  State of Matter and Pressure Chapter - 6 :  Effect of Heat on Matter Chapter - 7 :  Waves and Sound Chapter - 8 :  Reflection of Light Chapter - 9 :  Refraction of Light Chapter - 10 :  Static Electricity Chapter - 11 :  Current Electricity Chapter - 12 :  Magnetic Effects of Current Chapter - 13 :  Modern Physics and Electronics Chapter - 14 :  Physics to Save Life  

Role of Energy in Development Activities

Role of Energy in Development Activities There is a very close relationship between the development of a country and the use of energy. To speak the truth, energy use may be considered the first parameter to see how developing a country is. We should pay our first attention to education for the development of our country. A lot of students in our country are studying in schools, colleges, and universities. We have to ensure an adequate supply of electricity to run these institutions properly. They need light for studying at night and their studies are hampered if the electricity supply is not ensured. Laboratories are to be used, and computers and networks are kept active for higher education, which has no alternative other than the supply of electricity. Agriculture plays an important role in the economy of our country. As the country is small, the amount of suitable agricultural land is less, and it is further decreasing. Our country has achieved self-sufficiency in food by growing

Work

Work What is work? If because force-displacement happens then the product of force and component of displacement at the direction of force due to force is work. Work is the product of applied force on a body and its displacement along the direction of a force. Unit of work: J (Joule) Dimension of work, [W] = ML 2 T -2 What is Joule? If due to the appliance of one-newton force at the direction of force the application point of force moves 1 meter then it is 1 joule of work. What is positive work? If due to force the application point of force moves along the direction of force or the component of displacement is towards the direction of force then it is said to be work done by force or positive work. What is negative work? If due to force the application point of force moves in the opposite direction of force or the component of displacement is at the opposite direction of force then it is said to be work done on force or negative work.  What do you mean by the work 50 J? The work

Development of Physics

Development of Physics Modern civilization is the product of science. Behind this development of science, there are untiring efforts, discoveries, and innovations of scientists. Science has no national or political boundaries. The growth, development, and benefit of science are enjoyed by all people of all nations. From ancient time scientist have been contributing to the development of science. In this lesson, we will try to mention the contributions of physicists. Thales (624-569 B.C) is famous for his predictions regarding solar eclipse. He also knew about the magnetic properties of loadstone. Pythagoras (527-497 B.C) is a memorable name in the history of science. Besides the invention of several Geometric theorems, he made a longer-lasting contribution through his works on vibrating string. He was given several Geometric theorems. Moreover, he made long-lasting contributions through his works on vibrating strings. The present scales of musical instruments and music are partially th

Scope of Physics

  Scope of Physics Since physics is the oldest and the most fundamental branch and other branches somehow flourished on the basis of physics, it is very natural that the scope of physics is very vast. Not only that, different technologies have flourished based on different laws of physics and we are using these in our daily lives (there are examples of some instruments used in medical science in the final chapter).  At present the greatest contribution behind civilization is of electronics and physics has the greatest contribution behind civilization is of electronics and physics has the greatest contribution to this technology also. Besides daily activities, from destruction of war to space exploration, the contribution of physics is present. Not only that, by the combination of other branches of science and physics, newer branches have developed, for example, astrophysics consists of astronomy and physics. In order to explain organic processes, biophysics has been built up by the

Objectives of Physics

Objectives of Physics Physics unearths the mystery of nature:  Physics is the fundamental branch of science because its principles are the basis of other branches of science. For example, the principle of conservation of energy is a principle of physics used to explain the wide range of science starting from the structure of atoms to weather forecasting. Although the main function of physics is to study matter and energy, the main objective of physics is to realize the rules of nature as well as unearthing the mystery of nature. At the beginning of the twentieth century, physicists discovered that electrons revolve around the positively charged nucleus of an atom. Subsequent experiments proved that the nucleus consists of protons and neutrons. Now the physicists have discovered that protons and neutrons are formed of smaller particles. The study of physics helps not only to understand and explain natural events but also its application plays a vital role in other branches of science.

Good Morning Quotes

Good Morning Quotes Good Morning Quote-1 Write in your heart that every day is the best day of the year.   Good Morning Quote-2 Blessings of grace and peace be with you today and every day. Good morning   Good Morning Quote-3 I get up every morning and it's going to be a great day. You never know when it's going to be over, so I refuse to have a bad day. Good Morning Quote-4 Good morning! May your cup be filled up with blessings today. Good Morning Quote-5 Today's goals: Coffee and kindness. Maybe two coffee, and then kindness. Good Morning Quote-6 If someone seriously wants to be part of your life, they will seriously make an effort to be in it. No reasons. No excuses. Good morning. Good Morning Quote-7 You will never have this day again so make it count! Good morning! Good Morning Quote-8 Some days you just have to create your own sunshine. Good morning! Good Morning Quote-9 I opened two gifts this morning. They were my eyes. Good Morning Quote-10 When you start each day

What is zooming?

What is zooming? In graphical user interfaces, zooming means make a window larger. Typically, there is a zoom box in one corner of the window. When you select the zoom box the first time, the system expands the window to fill the entire screen. (This is sometimes called maximizing.) When you select it again, the window shrinks to its original size. You May Like What is zoom? Affect vs Effect What do you understand by phosphorylation? What do you understand by anaerobic respiration? What is fein? What is FEIN? What is EIN? What is a blue alert? What is ready made software? What is perm press wash?

What is zoom?

What is zoom? When referring to an image or graphic, zoom is a term used to describe a function of focusing on a section of the image and increasing its overall size, allowing the user to manipulate or view that section in greater detail. In the image to the right, is an example of an image that has been zoomed into at 1600%. You May Like What is zoom? Affect vs Effect What do you understand by phosphorylation? What do you understand by anaerobic respiration? What is fein? What is FEIN? What is EIN? What is a blue alert? What is ready made software? What is perm press wash?

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