What is a good U-value? The best insulating materials have a U-value of close to zero – the lower the better. Building regulations currently stipulate that for a new building, the elements must have maximum U-values as follows: Wall – 0.3 W/m2k. Roof – 0.15 W/m2k. What is a good window U-value? In a cold […]
Why does white light look blue?
Why does white light look blue? White light is a mixture of all wavelengths in visible spectrum. The blue glass has a property to absorb all colors except blue. Hence only blue is transmitted and thus the light seems to be blue. How do you reverse blue light damage? Try the “20-20-20” rule. Every 20 […]
How do you find the radius of BCC?
What are the different types of motion with which a follower can move?
What are the different types of motion with which a follower can move? These four are rotary, oscillating, linear and reciprocating. Each one moves in a slightly different way and each type of achieved using different mechanical means that help us understand linear motion and motion control. What are the three types of CAM? Cams […]
What method did scientists use to determine the age of Earth quizlet?
What method did scientists use to determine the age of Earth quizlet? Radio metric dating is a method used to show the age of rocks by measuring the amounts of radioactive substance found in rocks. Which unit of geologic time is the oldest? The primary and largest catalogued divisions of time are periods called eons. […]
How can I reduce EMF in my home?
How can I reduce EMF in my home? Remove as many electronic devices from your bedroom as possible. This includes using battery operated alarm clocks, moving the bed away from ‘charged’ walls, and even shutting off the electricity to your room during bedtime. Try and also charge your electronics in another room whilst you’re sleeping. […]
What is the basic principle of scintillation detectors?
What is the basic principle of scintillation detectors? a. The basic principle of pulse height spectroscopy is that the light output of a scintillator is proportional to the energy deposited in the scintillation material. The standard way to detect scintillation light is to couple a scintillator to a photomultiplier. What is scintillation efficiency? Scintillation efficiency […]
How does political corruption affect the economy?
How does political corruption affect the economy? Corrupted economies are not able to function properly because corruption prevents the natural laws of the economy from functioning freely. As a result, corruption in a nation’s political and economic operations causes its entire society to suffer. How does corruption violate human rights? Corruption in the judicial sector […]
What are three common types of optical instruments?
What are three common types of optical instruments? There are three main types of optical telescopes: refractive, reflective, and catadioptric. How are concave mirrors used in everyday life? Concave mirrors are used in reflecting telescopes. They are also used to provide a magnified image of the face for applying make-up or shaving. Concave mirrors are […]
How do you find the specific resistance?
How do you find the specific resistance? Specific Resistance (”ρ”) is a property of any conductive material, a figure used to determine the end-to-end resistance of a conductor given length and area in this formula: R = ρl/A. Specific resistance for materials are given in units of Ω-cmil/ft or Ω-meters (metric). What are the two […]