From: owner-ammf-digest@smoe.org (alt.music.moxy-fruvous digest) To: ammf-digest@smoe.org Subject: alt.music.moxy-fruvous digest V14 #14850 Reply-To: ammf@fruvous.com Sender: owner-ammf-digest@smoe.org Errors-To: owner-ammf-digest@smoe.org Precedence: bulk alt.music.moxy-fruvous digest Thursday, October 10 2024 Volume 14 : Number 14850 Today's Subjects: ----------------- A Gift For You: $500 Home Depot Gift Card! ["Home Depot Customer Care" Subject: A Gift For You: $500 Home Depot Gift Card! A Gift For You: $500 Home Depot Gift Card! http://nogridsurvival.ru.com/gHjtDzZ3InmSsesm0F_SY7B1oJYXWHOtaq0x8oDfXDY-s83MWw http://nogridsurvival.ru.com/OiOZPCPE-HWV2Xvia5hWGye3OrrTpcMM0uFbrLSCiracX0EXTQ uiry Concerning the Source of the Heat which is Excited by Friction See also: Mechanical equivalent of heat Rumford's most important scientific work took place in Munich, and centred on the nature of heat, which he contended in "An Experimental Enquiry Concerning the Source of the Heat which is Excited by Friction" (1798) was not the caloric of then-current scientific thinking but a form of motion. Rumford had observed the frictional heat generated by boring cannon at the arsenal in Munich. Rumford immersed a cannon barrel in water and arranged for a specially blunted boring tool. He showed that the water could be boiled within roughly two and a half hours and that the supply of frictional heat was seemingly inexhaustible. Rumford confirmed that no physical change had taken place in the material of the cannon by comparing the specific heats of the material machined away and that remaining. Rumford argued that the seemingly indefinite generation of heat was incompatible with the caloric theory. He contended that the only thing communicated to the barrel was motion. Rumford made no attempt to further quantify the heat generated or to measure the mechanical equivalent of heat. Though this work met with a hostile reception, it was subsequently important in establishing the laws of conservation of energy later in the 19th century. Calorific and frigorific radiation He explained Pictet's experiment, which demonstrates the reflection of cold, by supposing that all bodies emit invisible rays, undulations in the ethereal fluid. He did experiments to support his theories of calorific and frigorific radiation and said the communication of heat was the net effect of calorific (hot) rays and frigorific (cold) rays and the rays emitted by the object. When an object absorbs radiation from a warmer object (calorific rays) its temperature rises, and when it absorbs radiation from a colder object (frigorific rays) its temperature falls. See note 8, "An enquiry concerning the nature of heat and the mode of its comm ------------------------------ End of alt.music.moxy-fruvous digest V14 #14850 ***********************************************