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SHIMBA YA BUYENZE said:
What is the speed of Gravity?

According to Einstein’s General Relativity, gravity travels at the speed of light. Proving it is far from simple, though: unlike light, gravity can’t simply be switched on and off, and is also extremely weak. Over the years, various attempts have been made to measure the speed using studies of astronomical phenomena, such as the time delay of light as it passes through the huge gravitational field of Jupiter. While the results have been broadly in line with Einstein’s prediction, they’ve lacked the precision needed for compelling evidence. That’s now been provided by the celebrated detection of gravitational waves. Analysis of the signals picked up by the two giant LIGO instruments in the US has confirmed that gravity does indeed travel through space at the speed of light.
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Duh!!
 
992. How does a Microphone pick up sound?

A microphone converts sound into a small electrical current. Sound waves hit a diaphragm that vibrates, moving a magnet near a coil. In some designs, the coil moves within a magnet. Other microphones, such as condenser microphones, work on the principle of capacitance.

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Hata hivyo, upande wa Chelsea mambo yanaonekana kuwa mabaya zaidi kwa kocha Maurizo Sarri ambaye amekuwa na wakati mgumu klabu hapo kutokana na kutofanya vyema huku mashabiki wakichukizwa na mwendelezo wa matokeo mabaya.
 
989. Do underwater Snakes have gills?

While some snakes spend time in water, sea snakes live there permanently. However, instead of gills, they have a single lung, and must surface to breathe about once an hour. Valves keep their nostrils, which sit on top of their snouts, closed the rest of the time. These snakes also absorb oxygen through their skin, and have small, flattened heads, and paddle-like tails to aid with swimming. Most species live in warm waters in the Indian and Pacific Oceans. Sea snakes have very potent venom and release small amounts when biting fish and other prey.
 
988. How does Voice Biometrics work?

Voice Verification Voice biometrics works by digitizing a profile of a person's speech to produce a stored model voice print, or template The tones collectively identify the speaker's unique voice print. Voice prints are stored in databases in a manner similar to the storing of fingerprints or other biometricdata.

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987. What is SWIFT Code?

SWIFT Code (Society for Worldwide Interbank Financial Telecommunication) or BIC (Bank Identifier Code) is a unique identification code for a particular bank. These codes are used when transferring money between banks, particularly for international wire transfers. The Swift code consists of 8 or 11 characters.

SWIFT Code Format : AAAA-BB-00-YYY

First 4 characters - bank code (only letters)

Next 2 characters -country code (only letters)

Next 2 characters - location code (letters and digits)

Last 3 characters - branch code (optional).
 
986. What is Oxidation Stress?

Oxidative stress is an imbalance between free radicals and antioxidants in your body. Free radicals are oxygen-containing molecules with an uneven number of electrons. The uneven number allows them to easily react with other molecules. Free radicals can cause large chain chemical reactions in your body because they react so easily with other molecules. These reactions are called oxidation. They can be beneficial or harmful.
Antioxidants are molecules that can donate an electron to a free radical without making themselves unstable. This causes the free radical to stabilize and become less reactive.

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985. What is Earthquake Swarm?

Earthquake swarms are events where a local area experiences sequences of many earthquakes striking in a relatively short period of time. The length of time used to define the swarm itself varies, but may be of the order of days, weeks, or months. They are differentiated from earthquakes succeeded by a series of aftershocks by the observation that no single earthquake in the sequence is obviously the main shock.
 
984. What is COPD?

Chronic obstructive pulmonary disease (COPD) is a type of obstructive lung disease characterized by long-term breathing problems and poor airflow. The main symptoms include shortness of breathand cough with sputum production. COPD is a progressive disease, meaning it typically worsens over time. Eventually everyday activities, such as walking or getting dressed, become difficult. Chronic bronchitis and emphysema are older terms used for different types of COPD. The term "chronic bronchitis" is still used to define a productive cough that is present for at least three months each year for two years.

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983. What is "Cash Crunch"? What is the definition of the term "Cash Crunch"?

A "cash crunch" occurs when a company is running low enough on cash so that it starts to have an impact on their operations.
A "cash crunch" doesn't necessarily mean that a company is going bankrupt - instead, it can simply mean that they need to convert some of their non-liquid assets into cash.
Companies need cash to purchase equipment, pay employees, pay suppliers, etc. If a company is going through a "cash crunch", then they may have trouble paying these crucial cogs in their business.
 
SHIMBA YA BUYENZE said:
993. What is the difference between Earthing and Grounding?

Earthing means connecting the dead part (it means the part which does not carries current under normal condition) to the earth for example electrical equipment’s frames, enclosures, supports etc.
The purpose of earthing is to minimize risk of receiving an electric shock if touching metal parts when a fault is present. Generally green wire is used for this as a nomenclature.
Grounding means connecting the live part (it means the part which carries current under normal condition) to the earth for example neutral of power transformer.
Grounding is done for the protections of power system equipment and to provide an effective return path from the machine to the power source. For example grounding of neutral point of a star connected transformer.
Grounding refers the current carrying part of the system such as neutral (of the transformer or generator).
Because of lightening, line surges or unintentional contact with other high voltage lines, dangerously high voltages can develop in the electrical distribution system wires. Grounding provides a safe, alternate path around the electrical system of your house thus minimizing damage from such occurrences.
Generally Black wire is used for this as a nomenclature.
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982. What is IUCN red list and what does it contain?

The IUCN Red List of Threatened Species (also known as the IUCN Red List or Red Data List), founded in 1964, has evolved to become the world's most comprehensive inventory of the global conservation status of biological species. It uses a set of criteria to evaluate the extinction risk of thousands of species and subspecies. These criteria are relevant to all species and all regions of the world. With its strong scientific base, the IUCN Red List is recognized as the most authoritative guide to the status of biological diversity. A series of Regional Red Lists are produced by countries or organizations, which assess the risk of extinction to species within a political management unit.

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