Early in its history, in the seventeenth century, the barometer was purely a laboratory experiment, and it was primarily used not to measure air pressure, but to create an alleged vacuum […]. During the time from the creation of the first barometer...

Of all the animals on Earth and in the oceans, sharks have the most acutely developed electroreception abilities. This sensory perception enables them to detect and interpret the electric field that is emitted by animals as well as by the Earth itself....

As a rule, scientists display their talents either as theorists or as experimentalist, but not both. Einstein, Maxwell, and Gibbs, for example, were great as theorists but not creative as experimentalists, while Faraday and Rutherford, great as...

 

 

 

In cold winter months, lakes and rivers freeze over forming ice. […] How do aquatic animals survive in frozen lakes and ponds? […] All liquids have a boiling point and a freezing point. […] Water boils at 100 degree Celsius (100 °C) and freezes...

The electrocardiograph machine, or ECG, is one of the most common medical machines found in hospitals today. The ECG interprets electrical signals produced by the heart over time, capturing them and recording them via electrodes attached to the...

Gay-Lussac […] discovered that the ratio in which gases combine to form compounds can be expressed in whole numbers: for instance, water is composed of one part oxygen and two parts hydrogen. In the language of modern chemistry, this is expressed as...

Many people are familiar with the daily routine of washing, drying and styling their hair. Although hair will eventually dry on its own if given enough time, most people reach for a hair-dryer to speed up the process. While science may have disproven...

To know how a pressure cooker works you must know the physics behind it. The boiling point of water is 100 °C. When boiling water in a pot with no lid, no matter how much you heat it, the temperature will never go over 100 °C because of evaporation....

Defibrillation is the application of a pre-set electrical current across the myocardium to cause synchronous depolarisation of the cardiac muscle with the aim of converting a dysrhythmia into a normal sinus rhythm.The defibrillator was invented in 1932...

A doctor leading a weight loss group responded to a question posed by her group as to why they were unable to lose weight. She said it was all because of the Law Of Conservation of Mass, also known as the Law of Thermodynamics. “This law of...

Believe it or not, we’re all walking on the surface of a gigantic magnet. Compasses work because planet Earth itself is encased by its own magnetic field. A magnetic field is created by a moving electrical charge. Electrons buzzing around an atom’s...

In the summertime, have you ever come out of a swimming pool and then felt very cold standing in the sun? That’s because the water on your skin is evaporating. The air carries off the water vapour, and with it some of the heat is being taken away...