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What Is an Allotrope?

An allotrope is a kind of matter that is made of only one kind of atom. Some examples are carbon, sulfur, and phosphorous. This unique molecular configuration tends to display very particular physical properties. Some substances have different kinds of allotropes, which will reflect different...

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What Is an Electrode?

An electrode conducts electricity in an electric circuit. It can come in the form of a plate, rod or wire and is made of metals like copper, lead, zinc or silver. Some electrodes, though are made of non-metallic substances like carbon. Electrodes used in electrochemical cells are either anodes or...

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What Is Grain Alcohol?

Grain alcohol (also called ethyl alcohol or ethanol) is pure alcohol, and is made from grains like corn and rye that have been fermented and distilled. And no, this is not something you can pour into a mixed drink; grain alcohol is toxic, and is not even used at 100% concentration. It is quite...

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What Is Metamerism?

In biology, metamerism is defined as the property of having repeated structural segments in the body of an organism and is often studied in zoology and developmental biology Metamerism is also a particular psychophysical phenomenon related to color and the perception of color. Sample metamerism...

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What Is Water Poisoning?

We’ve all heard the advice, “Drink lots of water.” Water is essential to survival; in fact, human beings are composed to up to 65% water, However, it is possible to take too much water in too short a span of time. When this happens, the sudden intake of water causes a critical imbalance in the...

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What Is Yogurt?

Yogurt is a kind of food with a consistency of custard and pudding. It is made from milk which has been exposed to bacterial fermentation. Commercially-made yoghurt is often made with Lactobacillus acidophilus (or, alternatively, Lactobacillus bulgaricus) and Streptococcus thermophilis. It is...

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Who Discovered Electricity?

History is not just a recent discovery, people from as far back as two thousand years ago already knew of the existence of electricity. During the time of the ancient Greeks, scientists from the period found out that rubbing fur on amber will cause an attraction between the two materials. In the...

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What Does an X-Ray Technician Do?

X-rays are crucial diagnostic tests that enable doctors to understand the nature and extent of a disease, condition or disease. These tests are conducted by X-ray technicians. X-ray technicians train for several years at trade schools in order to understand the different kinds of x-ray equipment,...

What Is a Blue Moon?

What Is a Blue Moon?

Folk lore indicates that tonight, November 21, 2010, an extraordinary event will occur: the moon shines blue (but chances are it will not.) Observers can however defer to the present definition of the term "blue moon" and not be disappointed. Tonight star watchers can delight in a once in a fifty...

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What Are Some Differences Between Plant & Animal Cells?

Though there are some similarities especially in structural elements, plant and animal cells do differ especially in functions. Animal and plant cells both have cytoplasm, cell membrane and a nucleus. The cell walls of plants are made up of cellulose. Cellulose allows high pressure to build up...