Many Physic Principles Well Illustrated By These Experiment Designs.

A very scientific design using physic principles to illustrate potential energy, kinetic energy, lever system,electronic gadzet and etc--to produce work output. it may seem a bit absurd ,might be using a bit camera trick to cover up the effiency of the machine system. Nevertheless it is very excellent and unique, seemingly real and workable by established principles in physicsDont' miss. Check-In ==>XXXXX . Remember to come back here to the blog.

Tuesday, February 17, 2009

Heat Properties,Transferance and Thermodynamics.

cLearning About Heat (Highlights) – 1955
Temperature vs. HeatEureka! explains that heat refers to quantity of hotness, and is determined by the mass and speed of molecules. This program demonstrates that a bucket of water at a temperature of 50?C contains more heat than a cup of water at 100?C.
Heat as EnergyHeat is produced whenever there is movement and friction between two objects. Since movement is a form of energy, it follows that heat must also be a form of energy.
The expansion and contraction of liquidsTo show that water expands when heated and contracts when cooled
Expansion and ContractionUsing balloons to illustrate the process, Eureka! shows how, when matter gets hot, its molecules go faster and the solid, liquid, or gas expands. Conversely, when matter gets cold, its molecules go slower, and the solid, liquid, or gas contracts
Expansion of Solid, Liquid and Gas Part One
Expansion of Solid, Liquid and Gas Part Two
Evaporation and Condensation Sublimation Process - A Chemistry Phenomenon Welcome to www.SimpleChemConcepts.com.
You have learnt about the 3 States of Matter - Solid, Liquid & Gas. We have also learnt about the physical processes that changes one state to another. e.g. Melting, Evaporation, Boiling, Condensation, Freezing, etc..
Sublimation is a very special process which changes the solid state directly into the gaseous state without going through Melting process (i.e. without going through the liquid state).
In this video, we share with you one of the everyday life examples that such Chemistry Phenomenons are observed.
This is Solid Carbon Dioxide, and in general we call it as Dry Ice. Dry Ice is a classic example that we observe sublimation process to occur. The solid carbon dioxide changes directly into gaseous carbon dioxide, without going through the liquid state.
Dry Ice is commonly used to keep Ice-Cream cold and solid by ice-cream vendors. Do you have any idea why we don't use normal ice (made of water) to keep ice cream cold?
Eureka! Episode 24 – Conduction

What is the best insulation?Attic insulation with leaf blower
ThermodynamicsFundamentals of Physics (PHYS 200)
This is the first of a series of lectures on thermodynamics. The discussion begins with understanding "temperature." Zeroth's law is introduced and explained. Concepts such as "absolute zero" and "triple point of water" are defined. Measuring temperature through a number of instruments is addressed as well as the different scales of measurement. The second half of the lecture is devoted to heat and heat transfer. Concepts such as "convection" and "conduction" are explained thoroughly.
Complete course materials are available at the Open Yale Courses website: http://open.yale.edu/courses

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