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What are the characteristics of the planet Mercury?

Mercury is a small, rocky planet with no moons or rings. Due to its proximity to the sun, surface temperatures on Mercury can reach up to 840 degrees Fahrenheit. Mercury does not possess a true atmosphere, but it has an exosphere made up of atoms that have been blasted from the planet's surface by solar radiation. This exosphere is too thin to retain heat, so temperatures can fall to -275 Fahrenheit at night, resulting in the largest swing in surface temperature of any planet in the solar system.\nMercury possesses a metallic core and an active magnetic field, although this field is only ..

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What things are made of silicon?

One of the most common uses of silicon is to produce silicone, which has a huge number of uses. Silicone is found in breast implants and many other medical devices. Silicon is also used in computer and electrical components, most of which couldn't function without silicon semi-conductor chips.\nWhile silica is the main component of glass, silicon is also used to make optical glass. This type of optical glass is found in fiber optic cables and liquid crystal display (LCD) screens, such as those found in televisions, mobile phones and computers.\nSilicon is a key element when harvesting sol..

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How do you determine an organism's niche?

Niche refers to an organism's role in a particular ecosystem. Niches include herbivores, omnivores, carnivores, predators, consumers and producers. Producers make food for all, and their food is eaten by consumers. Herbivores consume producers. Other consumers are eaten by carnivores. Predators consume prey. Both consumers and producers are eaten by omnivores.The clean-up organisms are comprised of decomposers and scavengers. Scavengers feed on decaying or dead animals and plants. Decomposers do not eat dead matter; instead, they grow in or on dead matter. They absorb the matter's es..

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How many seconds are in a day ?

A day is considered to be the amount of time it takes the earth to rotate once around its axis. This rotation takes 23 hours, 56 minutes and 4.1 seconds, which is exactly 86,164.1 seconds long.\nIf you measure the length of a day in solar time, it varies depending on the time of the year. Using solar time, the length of a day in seconds varies from 86,325 seconds to 86,471 seconds.

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What does a spectrophotometer measure?

A spectrophotometer passes a light beam through a sample object and measures the intensity of light that reaches the detector. A spectrophotometer can either be categorized as a IR spectrophotometer or UV-visible spectrophotometer, depending on the light source's wavelength range.The basic principle of spectrophotometry is that every compound transmits or absorbs light over a specified wavelength. Spectrophotometry is a useful method of quantitative analysis in fields like biochemistry, physics and chemistry.

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How are tornadoes predicted?

Any time severe weather systems become powerful enough, they have the potential to spawn tornadoes. The key factor that turns a strong thunderstorm into a tornadic storm is rotation — that is, when the convection of hot air sets up a motion in the clouds that builds into a powerful funnel cloud. Unfortunately, this rotation may begin only moments before a devastating tornado descends from the clouds, so when severe weather threatens, meteorologists must pay close attention to their instruments. A "hook echo" on Doppler radar, indicating a sharp divergence in wind direction over a small area,..

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Why is uncompetitive inhibition important in enzyme chemistry?

The significance of uncompetitive inhibition has been highlighted in biochemistry and pharmacology. One example of uncompetitive inhibition is the use of lithium to prevent inositol monophosphatase that causes manic-depressive psychosis.\nUncompetitive inhibition belongs to a class of compounds called reversible inhibitors, which can be removed from a reaction to reverse its effects. Although both are reversible, uncompetitive inhibition is different from competitive inhibition, which involves the binding of an inhibitor to the enzyme so that it disrupts the possible connection of the enzyme t..

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Why is the collection and processing of specimens according to the proper procedure so important?

When specimens are transported, it's important that all factors are accounted for. Factors such as temperature, type of vehicle and the person or persons transporting specimens can all impact specimen integrity. Specific samples have strict guidelines regarding temperature and packaging that must be adhered to during transportation. As an example, blood samples must be kept frozen in containers that maintain proper temperature. When processing specimens, personnel and staff must adhere to strict handling standards. In many cases, there must be a paper trail detailing the person or persons..

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What is plastic section modulus?

A section modulus can be used when designing objects that have beams or pieces that are highly flexible and bendable, explains EngineersEdge.com. In most cases, the elastic form of the modulus is used. This can account for different types of objects, including metals. However, in certain specific cases a plastic section modulus is used to calculate these values and design the objects.\nThe plastic section modulus of a given object depends greatly on the plastic neutral axis of the object. This is an axis that splits the cross section in such a way that it sets the compression force from the ar..

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Who discovered the endoplasmic reticulum?

The rough portion of the endoplasmic reticulum manages the synthesis of proteins and packages them into vesicles for transport and further modification by the golgi apparatus. Due to its close proximity to the nuclear envelope, the endoplasmic reticulum allows ribosomes to translate mRNA from the nucleus into proteins. The endoplasmic reticulum is essential for proper cell function. It is found in all cells requiring proteins and enzymes.

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