In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time. This law, first proposed and tested by Émilie du Châtelet, means that energy can neither be created nor destroyed; rather, it can only be transformed or transferred from one form to another. For instance, chemical energy is converted to kinetic energy when a stick of dynamite explodes. If one adds up all forms of energy that were released in the explosion, such as the kinetic energy and potential energy of the pieces, as well as heat and sound, one will get the exact decrease of chemical energy in the combustion of the dynamite. Classically, conservation of energy was distinct from conservation of mass. However, special relativity showed that mass is related to energy and vice versa by E = mc2, and science now takes the view that mass-energy as a whole is conserved. Theoretically, this implies that any object with mass can itself be converted to pure energy, and vice versa. However this is believed to be possible only under the most extreme of physical conditions, such as likely existed in the universe very shortly after the Big Bang or when black holes emit Hawking radiation. Given the stationary-action principle, conservation of energy can be rigorously proven by Noether's theorem as a consequence of continuous time translation symmetry; that is, from the fact that the laws of physics do not change over time. A consequence of the law of conservation of energy is that a perpetual motion machine of the first kind cannot exist, that is to say, no system without an external energy supply can deliver an unlimited amount of energy to its surroundings. Depending on the definition of energy, conservation of energy can arguably be violated by general relativity on the cosmological scale. (Wikipedia).
Visualization of conservation of energy
See explanations for this video in https://www.udiprod.com/energy/
From playlist Animated Physics Simulations
Is renewable energy really sustainable?
Renewable energy is described as replenishable, safe for the environment, and available in the long term. But do all renewable energy sources meet these criteria? Watch to find out. Find out more information at https://bit.ly/3p0Thsz To get the latest science and technology news, su
From playlist Theory to Reality
Mechanical Energy Conservation
This video explains what is meant by mechanical energy conservation and identifies the conditions under which mechanical energy is conserved. Mechanical energy conservation is contrasted with situations in which energy is transferred across the boundary as a result of external forces doin
From playlist Work and Energy
Physics 9 Conservation of Energy (1 of 11) Introduction
Visit http://ilectureonline.com for more math and science lectures! In this video I will show and explain the conservation of energy equations. Next video in this series can be seen at: https://youtu.be/vWXc0YpR_mE
From playlist PHYSICS - MECHANICS
Energy, Work & Power (19 of 31) Conservation of Mechanical Energy, An Explanation
In this video Mr. Swarthout explains total mechanical energy and how you can use it in together with conservation of energy to solve problems in physics. In the example shown in this video, work is done on the object to raise the object to a specific height. At its greatest height, befor
From playlist Kinetic Energy, Potential Energy, Work, Power
Teach Astronomy - Conservation of Energy
http://www.teachastronomy.com/ One of the most important principles in physics is the law of conservation of energy. Energy can be neither created nor destroyed. In any closed physical system the total amount of energy is constant, although the energy may change forms multiple times. Wh
From playlist 04. Chemistry and Physics
Learn the basics of what energy is, how it is converted into other forms, and why some sources of energy are more useful and efficient than others. Play the Energy Lab: http://www.pbs.org/wgbh/nova/labs/lab/energy/ Find discussion questions for this video and other resources in the Ener
From playlist NOVA Labs
Teach Astronomy - Types of Energy
http://www.teachastronomy.com/ There are several broad types of energy. Energy is measured in units of calories in the English system or joules in the international system of metric units. One broad category of energy is kinetic energy, or the energy of motion. A second broad category of
From playlist 04. Chemistry and Physics
Conservative & Nonconservative Forces, Kinetic & Potential Energy, Mechanical Energy Conservation
This physics video tutorial provides a basic introduction into conservative and nonconservative forces. The work done by a conservative force does not depend on the path taken while the done by a nonconservative force is path-dependent. Examples of conservative forces include the electri
From playlist New Physics Video Playlist
24.1 Mechanical Energy and Energy Conservation
MIT 8.01 Classical Mechanics, Fall 2016 View the complete course: http://ocw.mit.edu/8-01F16 Instructor: Prof. Deepto Chakrabarty License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
From playlist MIT 8.01SC Classical Mechanics, Fall 2016
Episode 13: Conservation Of Energy - The Mechanical Universe
Episode 13. Conservation of Energy: According to one of the major laws of physics, energy is neither created nor destroyed. “The Mechanical Universe,” is a critically-acclaimed series of 52 thirty-minute videos covering the basic topics of an introductory university physics course. Each
From playlist The Mechanical Universe
Hamiltonian Structure of 2D Fluid Dynamics with Broken Parity by Sriram Ganeshan
DISCUSSION MEETING : HYDRODYNAMICS AND FLUCTUATIONS - MICROSCOPIC APPROACHES IN CONDENSED MATTER SYSTEMS (ONLINE) ORGANIZERS : Abhishek Dhar (ICTS-TIFR, India), Keiji Saito (Keio University, Japan) and Tomohiro Sasamoto (Tokyo Institute of Technology, Japan) DATE : 06 September 2021 to
From playlist Hydrodynamics and fluctuations - microscopic approaches in condensed matter systems (ONLINE) 2021
6.5 The Conservation of Mechanical Energy
This video covers Section 6.5 of Cutnell & Johnson Physics 10e, by David Young and Shane Stadler, published by John Wiley and Sons. The lecture is part of the course General Physics - Life Sciences I and II, taught by Dr. Boyd F. Edwards at Utah State University. This video was produced
From playlist Lecture 6B. Work and Energy
7.3 Collisions in One Dimension
This video covers Section 7.3 of Cutnell & Johnson Physics 10e, by David Young and Shane Stadler, published by John Wiley and Sons. The lecture is part of the course General Physics - Life Sciences I and II, taught by Dr. Boyd F. Edwards at Utah State University. This video was produced
From playlist Lecture 7B. Impulse and Momentum
Lecture 16 - Potential Energy & Conservation of Energy, A - Ph1121 Physics - Classical Mechanics
Physics PH 1121 Classical Mechanics - Week 6 Day 1 *** Go Full Screen and make sure you click the gear icon and choose HD. Playlist for classical mechanics course: https://www.youtube.com/playlist?list=PL6LNFNTCXeCaDAxx7lxcS4yEK3qFPNvD1
From playlist PH1121
Conservation Of Energy | Energy | Physics | FuseSchool
Conservation Of Energy | Energy | Physics | FuseSchool In all changes - energy (measured in joules) does not get used up; energy is “CONSERVED”. However, energy becomes less and less useful ending up as environmental waste heat, so we always have to come back to an energy source for more.
From playlist PHYSICS: Energy
How well do you know Conservation Laws
Going through a series of questions, test your understanding of the Law of Conservation of momentum and energy Check out www.physicshigh.com and follow me on facebook and twitter @physicshigh Support me on www.patreon.com/highschoolphysicsexplained
From playlist Dynamics