The Green Flash – A rare optical phenomenon

Sunrise and Sunsets are always stunning to watch and some rare occurence during these events makes it more beauiful to watch. Yes, there is an interesting and a rare meteorological optical phenomenon called the green flash. It is a green spot or flash visible for only few seconds at the top edge of the sun…

How does a pulse oximeter work?

The pulse oximeter is a device used to measure oxygen saturation in the blood. Humans breathe oxygen in the air which enters the lungs. Then the oxygen is carried in our blood to the entire body by the hemoglobin in our red blood cells. Oxygen saturation refers to the percentage of the hemoglobin that carries…

Mirror neurons – Why you yawn or smile back when someone does it?

Ever wondered why you smile at others back when you see someone smiling at you? Ever thought about why you yawn whenever you see someone does it? Sometimes when you see a stranger hit their toe on something, you might have flinched. You might be watching a cricket match on TV, and when the batsman…

Eye Floaters – Why do we get eye floaters?

Have you ever noticed strange shapes floating in your vision from time to time with different shapes, sizes, and forms? They are definitely not optical illusions, and they will tend to drift away with a slight lag from our sight when we try and look at them directly. These little objects that float in our…

The Glass Delusion – A disorder that makes us think we are made of glass

There was a strange delusion going on mainly during the late Middle Ages and early modern ages (15th to 17th centuries). It was a regularly recorded condition and it is an unusual psychiatric disorder. The disorder is called Glass delusion. People with this disorder believed that their whole body or part of their body was…

Why do we cry – The reason behind it

Usually, we relate crying to sadness. But, do you know why we really cry? Experts believe crying may be an evolutionary trait. When our ancestors hurt themselves or felt upset, they cried. Their tears evolved as a way to send a message to people close to them that they needed help from others. The same…

Pica – A disorder that urges you to eat non food items

Pica is a psychological and a compulsive eating disorder. People with Pica will crave or eat items that are not food and have no nutritional value. The most common items eaten are Clay (geophagia), ice (pagophagia), dirt, and flaking paint. Less common items include hair (trichophagia), feces (coprophagia), starches such as cornstarch and dried pasta(amylogphagia),…

Sailing stones – Mystery behind the Sailing stones

We may have heard lot of strange and mysterious details about aliens, UFO, places, things, or even about ghost but in this case it is about some stones. Yes, these stones which are scattered in the desert moves on their own and leaves mysterious trails behind them with no explanation. The stones can be from…

The diamond star in space – Lucy in the sky

Your eyes will be wide open if I say there is an enormous piece of diamond floating in the space. Yes, In 2004, astronomers at the Harvard-Smithsonian Center for Astrophysics made a surprising discovery. It is the largest diamond ever found not on Earth but in space. Technically, it is called BPM 37093 or V886…

Why do we feel better after crying?

Usually, humans tend to cry in tears when they are emotional. Negative emotions like sadness, grief, anger, suffering, mourning, or physical pain produce emotional tears. Even extreme happiness during times of intense humor and laughter also produces emotional tears. Whether we are really happy or sad, our limbic system in the brain feels it is…