A reliable indicator of the air quality in offices, classrooms, or living rooms is the CO2 content. In fresh air, the concentration of carbon dioxide is around 400 ppm. This stands for “parts per ...

JEE Advanced 2026 Syllabus: The Indian Institute of Technology (IIT) Roorkee, the conducting authority for JEE Advanced 2026, has published the detailed, topic-wise syllabus on its official website at ...

Digital multimeters (DMM), once called voltmeters, have been described as the tape measure for engineers in the new millennium. With electronics and electrical circuits included in almost every ...

For the design of reliable power grounding systems for critical electrical infrastructure, soil resistivity investigation is crucial. However, soil resistivity depends on various geotechnical ...

Electromechanical energy meters have been the standard for metering electricity since billing began. But these are now being gradually replaced by electronic digital energy meters. Presented here is a ...

In physics, we symbolise everything with an English/Greek alphabet, such as the speed of velocity, wavelength and other quantities as well. To make it more convenient for the students, teachers or ...

A digital ohm meter is an essential tool for a variety of electrical and electronic applications. It is used to measure resistance, which allows users to gauge the impedance of a component in a ...

Optimizing an RTM process. The Rogowski coils (orange loops) in CTC’s portable energy recording unit (PERU, lower right) measure electrical current during resin transfer molding (RTM), enabling ...

We are spoiled with multimeters today. Even the cheapest meter you will get these days is almost surely digital with a tremendous input impedance. But a few decades ago, meters were almost always ...