What is Cryptocurrency? A cryptocurrency or a digital or virtual currency that is secured by cryptography, which makes it almost impossible to counterfeit and double spend. Most of the cryptocurrencies decentralized networks based on a technology known as blockchain technology. You may be familiar with the most popular versions, Bitcoin and Ethereum, but there are …
What is Oximeter ? Today (during Covid-19 Pandemic) Pulse Oximeter is a common term. It is an essential medical instrument like thermometer or sphignomanometer (blood pressure measuring instrument). It is a non-invasive diagonastic device to measure Oxygen saturation in patient’s arterial blood (SpO2) . It is fixed on the finger tip or earlobe. Who invented …
Earth Day is one of the two days (other day is World Environment Day) celebrated by environmentalists around the world with a pledge to protect the environment. The first Earth Day was celebrated on April 22, 1970. The first three people who came forward to select this day as Earth day were U.S Senator Gaylord …
