Once a person dies, their body begins a process of decay. This process can be seen through certain external changes which are called post mortem signs of death. There are 4 postmortem signs of death - pallor mortis, algor mortis, rigor...

The respiratory system is composed of the nose or nasal cavity, the pharynx, the larynx, the trachea, the bronchi, and the lungs. The respiratory system's functions are gaseous exchange, inhaling oxygen and exhaling out carbon dioxide,...

Resonance is a way of describing delocalized electrons within certain molecules where a single Lewis formula cannot express the bonding. To understand resonance in chemistry, you need to first understand covalent bonds, sigma and pi...

Quantum physics deals with the foundation of our world – the electrons in an atom, the protons inside the nucleus, the quarks that build those protons, and the photons that we perceive as light. These constitute everything that we are...

Plants, unlike most living things, produce their own food through a process called photosynthesis. Photosynthesis means 'making using light'. Plants use the energy from the sunlight to make food. The food matter comes from carbon dioxide...

Photoelectric effect occurs when electromagnetic radiation above the threshold frequency of the given metallic surface, strikes the surface and releases electrons from it. This happens because light is made of massless particles called...

A particle accelerator is a machine that accelerates particles. More specifically, it accelerates elementary particles, like protons and electrons, at extremely high speeds—almost 99.99% of the speed of light. These particles are then...

Neutron stars are formed from the core of some starrs. Neutron stars generally have a radius of only around 12 km. With masses exceeding 1.4 times that of the Sun, these are some of the densest objects in the Universe. A tablespoonful of...

Your nervous system is why you can see this video, scratch your neck, feel hungry and ask yourself, Who am I? The human nervous system is a fascinating system with 86 billion neurons and about the same number of glial cells. The main...

Multiverse theory suggests that our universe, which consists of billions and billions of planets, stars and galaxies and extends out tens of billions of light-years, may not be the only universe that exists. There could be another...

No one can beat trees at living long. Methusaleh, the single oldest living tree, that we've discovered, is over 4,800 years old. On the other hand, Pando is a colony of quaking aspen trees all born from the same over 70,000 year old root...

Solar and lunar eclipses are celestial phenomena that occur when the sun, moon and Earth align in a way that either the moon casts a shadow on Earth or the latter casts a shadow on the moon. So what are the similarities and differences...

The jellyfish is one weird sea animal. What makes it even weirder is that it doesn’t have a brain or a heart. Though it doesn’t have a brain, it does have a nervous system in the form of nerve nets and some have a structure called a...

Chernobyl is an HBO mini-series that reintroduced the world to the nuclear catastrophe that occurred on April 26th, 1986 at the Chernobyl nuclear reactor in the Soviet Union, in what is now Ukraine. The series followed the tragedy that...

Robert J. Oppenheimer, born on April 22, 1904, is known as the father of the atomic bomb. Oppenheimer was awarded a PhD in theoretical physics and was interested in the emerging field of quantum physics. As a scientist at the University...

Plenty of people argue that you can only fold a piece of paper in half a maximum of 7 times. Is 7-times a hard limit for folding a piece of paper? Well, a piece of paper can be folded more than 7 times. But there's a catch. You cannot do...

An igloo is made of compressed snow. Compact hardened snow is a great insulator of heat because snow is nothing but semi-frozen water with roughly 95% trapped air. The air molecules trapped between the tiny ice crystals create air...

Hurricanes, cyclones and typhoons are formed due to violent storms that originate over oceans and seas and move towards land, potentially causing extensive damage to both life and property. But there is a very interesting thing related...

The working of an electric iron is very simple – it draws electricity from the mains and heats a coil inside. This heat is then transferred to the bottom plate, which is pressed against the clothing to remove wrinkles. It is the...

A helicopter works on the principle of aerodynamic lift - an upwards force that opposes the weight of the helicopter and holds it the air. So how exactly do the rotors of helicopters help them fly? For any object to fly in the air, it...

Young sunflowers face the sun when it rises in the east and then track its motion in the sky throughout the day till it sets in the west in the evening. The process repeats the next day, as sunflowers return to their ‘starting’ position,...

Contrary to popular belief, cockroaches cannot survive a nuclear explosion; however, it is true that cockroaches are more tolerant of certain ionizing radiation than humans. Even so, they cannot survive bug spray, as it consists of...

Ammonia and bleach are very popular for cleaning surfaces. However, the fact that you should NEVER mix ammonia and bleach is so well-known because their combination may lead to the formation of dangerous, potentially hazardous byproducts...

Hawking radiation was first discovered by English scientist Stephen Hawking in 1974. Prior to this discovery, our knowledge of black holes was very limited. It was believed that black holes were completely black and that they did not...