Basic Physics - Gurumuda.Net

Heat transfer by convection

Ever been by the beach when it was sunny? On a clear day, on the beach, there is always wind blowing from the sea. Why is there always a wind on the beach and why do the sea breeze...

Heat transfer by conduction

1. Definition of the heat transfer by conduction If you sit in a wooden chair, the surface of the wooden chair becomes warm. Conversely, if you sit in a chair made of plastic or metal, the surface of a...

Latent heat, specific heat and heat capacity

If you put a mercury thermometer into a container containing a mixture of cold water and ice, you will observe after moving downwards, the surface of the mercury stops moving. Mercury’s surface stops moving after reaching the temperature of...

Definition of heat, mechanical equivalent of heat, equation of heat

1. Definition of heat If objects that have temperature differences touch each other, there will be heat transfer from high-temperature objects to low-temperature objects. Heat transfer stops after touching objects reach the same temperature. For example, if we mix...

Anomalous behavior of water below 4°C

Each object expands (the volume of objects increases) when the temperature increases and objects shrink (the volume of objects decreases) when the temperature decreases. Water also expands when the temperature increases and shrinks when the temperature decreases, but not...

Linear expansion

Most solid objects experience a linear expansion when the temperature changes. The linear expansion is the length of the object increases or the length of the object decreases. Usually, the length of the object increases when the temperature increases,...

Conversion of temperature scale

The Celsius scale and the Fahrenheit scale are different temperature scales. If the temperature of an object is measured and expressed on a Celsius scale, then we want to state the temperature of the object on the Fahrenheit scale...

Thermometers and temperature scales

1. Thermometers The tool designed to measure temperature is a thermometer. There are many types of thermometers, but the working principle is the same. Usually, we use thermometric objects, the nature of matter that changes with temperature. If the...

The Zeroth Law of Thermodynamics

So far we have only observed the thermal equilibrium experienced by two objects in contact. To understand the concept of thermal equilibrium in more depth, let’s review three objects (say objects A, object B, and objects C). For example,...

Definition of temperature and thermal equilibrium

Definition of temperature Ever touched ice? What do you feel when your hands touch ice? What if what you touch is fire? When touching ice, your hands feel cold, when you touch the fire, your hands feel hot. Hot,...