Introduction Compound microscope is an optical instrument used to observe microscopic objects. The scientific study of microscopic objects is called microscopy. Early microscopes had only one lens. Hence, they are now called ordinary microscopes. Compound microscopes contain at least two lenses. In 1590 Hans Janssen and his son Zacharias Janssen developed the first compound microscope in the Netherlands. Galileo Galilei between 1609 and 1624 developed the compound microscope using concave and convex lenses and studied the compound eyes of insects. In 1625, the name microscope was given by the German physician Giovanni Faber. Robert Hooke, an English microscopist, examined ... Read More

Introduction Conductors in electrostatic equilibrium places a major role in shielding objects electrostatically. The movement of protons, electrons, as well as other subatomic particles within material results in the transfer of electric charge from one place to the next, thereby creating an electric current that flows through the substance. The interaction that is produced by the electrostatic forces between the particles facilitates the charges to move around inside materials easily. Thus, Conductors are substances that allow flow of charge with a minimum resistance i. e. substances with free electrons that are not bonded to the atoms. What is Electrostatic ... Read More

Introduction Complementary metal oxide semiconductor (CMOS) is an Integrated circuit (IC). In the 1970s, an integrated circuit (IC) chip could only contain up to 10, 000 transistors, and transistor feature lengths were over 1 m. For instance, the Motorola 6800 CPU has just 4100 transistors and a 6.0 m feature length. But the IC industries have seen a profound upheaval in less than 50 years. Today's chips may have more than 10 billion transistors, while their feature lengths may only be 10 nm. More functions can now be placed in a chip because of the huge rise in transistor density. ... Read More

Introduction Density of liquids is different for different types of liquids, which helps to separate them. The density of an item is defined as its mass per unit volume. It is denoted by the character D as well as the symbol ρ, “rho”. The Standard unit of density is kg/m3, which stands for kilogram per cubic metre. Density may be computed using the equation mass divided by volume. A homogeneous substance, such as ice, has identical density throughout because its particles are tightly packed collectively. Density Definition The density of a substance is described as the density of ... Read More

Introduction Density of common substances is an important scientific term with many applications in human life and has a close association with mass. Every matter or the substances that surround us have a mass and that details the quantity or the amount of matter present in that particular substance. Density also has the name specific mass and volumetric mass. Density details the mass and volume of substances taken. The precise measurements of density or the knowledge about density have been very limited during the past centuries. The invention made by Archimedes is responsible for the current facts about density. ... Read More

The violin is a beautiful and versatile instrument that can be played in various musical styles, from classical to folk to pop. A bow, or arched stick, is used to play the violin, drawing the horsehair strings across the instrument's metal strings. The knee supports the bow arm as the performer holds the violin against the shoulder and under the chin. The left hand's fingers are positioned behind the strings to halt them at various locations, resulting in multiple pitches. The bow, which makes a sound when it is pulled across the lines, is controlled by the right hand. ... Read More

"It's important to have days when you do Nothing, and sometimes it's better to be still…." A leisurely day may marvel at our psychological health and increase our productivity over time, even though we often feel terrible about having one. Scientists suggest that at least one day each week to relax can assist in lowering psychological stress, lowering blood pressure, and overall well-being. A leisurely day implies not undertaking something on your to-do list, not checking work-related notifications, not answering work calls, spending the entire day in your casual wear, napping, and just doing stuff you truly love, such as ... Read More

If you are interested in learning how to draw a skull that is as realistic as possible, you have found the right place to be. Skull drawing is easier than it may appear at first glance. By following a few fundamental steps in the drawing process, you will be able to create an excellent piece of artwork by learning how to draw a skull. The following comprehensive instructions will show you how to design a skull step-by-step. In this guide, we will go over not only the materials you will need but also the many methods that may be used ... Read More

Dark elbows are one of the most common problems among fitness freaks. People prefer to work out with their hands above their heads because this helps them strengthen their core muscles and keep the body stable. Moreover, working out with your arms above your head also tones your triceps, which are the muscle groups on the front of your upper arm. However, there is always a downside to everything in life, so it also seems that when you're working out and trying to eliminate annoying problems. As we know, when it comes to things that can be easily ... Read More

A simple tutorial on how to download a movie We all want to keep a movie we liked to rewatch some other time or savor for some other moment. As intriguing as it is, it requires a lot of time and space to download a movie, and the methods to do so are through the internet. Method 1: Torrent Downloading movies using torrents is easy and free, but it is dangerous because it causes a violation of privacy. You are downloading a movie without actually owning it. So to do so, follow these steps carefully − Step 1 ... Read More