Science > Physics > Units and Measurement > Measurement of Length, Area, and Volume > Measurement of Area and Volume In this article, we shall study methods of the measurement of area and volume. Measurement of Area: Measurement of Area of Irregular Shape: The area of an irregular object can be obtained by drawing an […]
Science > Physics > Units and Measurement > Measurement of Length, Area, and Volume > Measurement of Terrestrial Distances, Heights and Depths In the last article, we have studied measurement of distances between heavenly bodies. In this article, we shall study methods of the mesurements of terrestrial distances. An instrument used for Measurement of Bearings: […]
Science > Physics > Units and Measurement > Measurement of Length, Area, and Volume > Distances of Heavenly Bodies from the Earth In this article, we shall study the parallax and other methods to find the distance between two heavenly bodies. Parallax: Hold a pencil vertically in front of you at a certain distance against […]
Science > Physics > Units and Measurement > Measurement of Length, Area, and Volume > Use of Micrometer Screw Gauge Physics is a science of measurement. In science and engineering, we perform experiments. During experiments, we have to take readings. Thus all these experiments require some measurements to be made. During the production of mechanical […]
Science > Physics > Units and Measurement > Measurement of Length, Area, and Volume Use of Vernier Calipers Physics is a science of measurement. In science and engineering, we perform experiments. During experiments, we have to take readings. Thus all these experiments require some measurements to be made. During the production of mechanical products, we […]
Science > Physics > Units and Measurement > Measurement of Length, Area, and Volume > Use of Metre Scale Physics is a science of measurement. In science and engineering, we perform experiments. During experiments, we have to take readings. Thus all these experiments require some measurements to be made. During the production of mechanical products, […]
Science > Physics > Semiconductors > Introduction Semiconductors are the substances whose conductivity lies between the conductors and insulators e.g. Germanium, Silicon, etc. These elements are members of the fourth group of the periodic table with valency 4. These elements have a partially filled conduction band and partially filled valence band. There are no free […]
Science > Physics > Semiconductors > PN Junction Diodes When a crystal of semiconductor is doped such that half the portion of the crystal is doped with a trivalent impurity and the other half is doped with a pentavalent impurity, then the junction (boundary) formed is called a PN junction. The crystal itself is called […]
Science > Biology > Digestion and absorption in Human > Salivary Glands There are two sources of digestive enzymes: The glandular cells of the lining of the stomach and intestine, which directly pour their secretion into the lumen of the gut or the alimentary canal. Special glands such as the salivary glands, the liver and the […]
Science > Physics > Oscillations: Simple Harmonic Motion > The Vibration of Vertical Spring In this article, we shall study the vibration of vertical spring, when a mass is attached to it. Oscillation of Mass Due to a Vertical Spring: Let us consider light and elastic spring of length L suspended vertically from a rigid […]