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The Richter scale[ 1] ( / ˈrɪktər / ), also called the Richter magnitude scale, Richter's magnitude scale, and the Gutenberg–Richter scale, [ 2] is a measure of the strength of earthquakes, developed by Charles Richter in collaboration with Beno Gutenberg, and presented in Richter's landmark 1935 paper, where he called it the "magnitude ...
A simple seismometer, sensitive to up-down motions of the Earth, is like a weight hanging from a spring, both suspended from a frame that moves along with any motion detected. The relative motion between the weight (called the mass) and the frame provides a measurement of the vertical ground motion. A rotating drum is attached to the frame and ...
Calcium Lime Rust. Calcium Lime Rust, more commonly known as CLR, is a household cleaning product used for dissolving stains, such as calcium, lime, and iron oxide deposits.
Massage (video) Massage is the rubbing or kneading of the body's soft tissues. [1] Massage techniques are commonly applied with hands, fingers, elbows, knees, forearms, feet or a device. [2] [3] The purpose of massage is generally for the treatment of body stress or pain.
Ultrasonic cleaning is a process that uses ultrasound (usually from 20 to 40 kHz) to agitate a fluid, with a cleaning effect. Ultrasonic cleaners come in a variety of sizes, from small desktop units with an internal volume of less than 0.5 litres (0.13 US gal), to large industrial units with volumes approaching 1,000 litres (260 US gal).
Seismic base isolation, also known as base isolation, [ 3] or base isolation system, [ 4] is one of the most popular means of protecting a structure against earthquake forces. [ 5] It is a collection of structural elements which should substantially decouple a superstructure from its substructure that is in turn resting on the shaking ground ...
Simple Green is an American brand of cleaning products produced by Sunshine Makers, Inc. [1] Their best known product is Simple Green All-Purpose Cleaner, which totaled sales of at least US$5.7 million in 2004. [2] It is advertised as an environmentally friendly, non-toxic, and biodegradable cleaner.
Earthquake-resistant or aseismic structures are designed to protect buildings to some or greater extent from earthquakes. While no structure can be entirely impervious to earthquake damage, the goal of earthquake engineering is to erect structures that fare better during seismic activity than their conventional counterparts.
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