Properties of Matter

It had taken our species millions of years to build an airplane that flew like a bird. The historic flight of Wright brothers lifted into the air at Kitty Hawk, North Carolina, USA, on December 17, 1903, at 10:35 A.M. It was the first time a self–powered airplane, controlled by a human, had flown for any significant amount of time. Amazingly, however, once we had learned how exactly airplanes flew, it took us only fifty years to build a space craft. The credit goes to Daniel Bernoulli, whose seminal work in hydrodynamics enabled Zhukovsky and others to get us off the ground. Daniel Bernoulli's discovery also led to the invention of Sphygmomanometer, the painless, inflatable Blood pressure measuring device which we are familiar with, by an Italian doctor Scipione Riva – Rocci in 1896. The contributions of great scientists–Archimedes, Robert Boyle, Blaise Pascal, Leonardo da Vinci changed the world we live. Let's understand the laws that govern the behavior of matter in all its states – solids, liquids and gases and their effects on the environment.

Heat

Scientists have studied the subject of heat as if their lives depended on it : Their lives – all lives – did depend on heat. The tremendous amount of heat from the 'Sun' – 17 million billion kilowatt – hours' worth everyday powered all the plants on Earth, their leaves – tiny solar panels – converting sun shine into biomass and physical movement through the process of 'Photosynthesis'. Plants, in turn sustained humans. The Sun was like the furnace of a gigantic steam engine, producing heat that powered the earth and everything on it. Heat energy is the life sustaining energy. We inhale oxygen, which is absorbed in the blood through the lungs. Oxygen is supplied to the cells through the blood stream. In the cells this oxygen combines with glucose to release CO2 , H2O and heat energy. This heat released is responsible for the functioning of human bodies. The same mechanism works more or less in all life forms.

For More Information on the topics of heat such as Change of State Heat Transfer Thermodynamics Heat Engines Refer to the link below wonderwhizkids.com/Physics/Heat