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  • What Happens When a Black Light Is Put Through a Prism?

    All light that is not absorbed by a prism, even black light, is separated out into a continuum of different wavelengths or colors. The speed of light through a medium is a function of its...

  • Voter Precinct Vs. Voter District

    In the United States, a district is an area from which a candidate is elected to a legislative seat. A precinct is the smallest area from which votes are collected, and it has a single polling place.

  • What Is Progressive Tense?

    Progressive tense indicates actions or states of being that occur over some duration of time. The progressive tense is constructed of a form of the verb "to be" and a gerund ("-ing" form of a verb).

  • How to Take Effective Reading Notes

    Students are often frustrated when reading school textbooks. They know that they should be taking notes on the reading, but are unsure how to go about it. This simple classroom-tested technique...

  • Types of Heat Exchangers

    Heat exchangers are mechanical devices used to transfer heat from one fluid to another over a solid surface. They are designed to be efficient and the transfer of heat occurs either through...

  • What Is a Ballast?

    Ballasts are heavy material, often seawater, placed in the hold of a ship to gain stability. Routine ballast discharges from oil tankers account for a large portion of the total oil (including...

  • How to Find the Perimeter of a Trapezoid With a Missing Side

    A trapezoid is a quadrilateral with two parallel sides. In geometry, you may be asked to find a missing side of a trapezoid, given the area and height. For example: a trapezoid has an area of 171...

  • How to Easily Learn To Speak Spanish

    Information on how you can easily and efficiently learn to speak Spanish. Follow these tips to start speaking Spanish today.

  • How to Make a Construction Paper Bee

    Children are naturally curious about bees. Bees are an important part of the life cycle of plants, as they collect and distribute pollen. About a third of all the food we eat comes from...

  • Sedimentation Methods

    Sedimentation is the separation of a dilute suspension of solid particles into supernatant liquid and concentrated slurry. Examples of solid particles include steel, iron, calcium, lithium and...

  • Personal Hygiene & Secondary Education

    Secondary school students often become more preoccupied with grooming their hair, nails and overall personal hygiene. Consequently, secondary schools emphasize the importance of students learning...

  • Precautions With Sodium Carbonate

    Sodium carbonate, a substance used most commonly in laundry detergent, is a white powder. In chemical experiments, it serves as an electrolyte, allowing it to conduct electricity. In industry,...

  • What Is Silicate Weathering?

    There are three forms of weathering, constituting physical, chemical and biological processes. Though weathering can be confused with erosion, there are subtle differences. Erosion occurs with the...

  • How to Annotate Books

    Almost all high school and college teachers require this. They are right, if done correctly, you will do better on your test grades. Annotating is not that hard if you know what you are looking...

  • How to Increase Curves

    Increasing curves on a graph is a common problem type given in advanced or college algebra. You are given a sin or cos function and asked to increase or decrease the appearance of the graph's...

  • Mountainous Ecosystem Facts

    Mountainous ecosystems are fragile environments. They are home to numerous isolated and threatened animal species. Yet mountain regions also supply fresh water to millions of people living in...

  • Definition of Thoracic & Abdominal Aorta

    The aorta, which is separated into the thoracic and abdominal portions by the diaphragm, is one of the body's most critical blood vessels. The enormous blood pressure in this artery makes it...

  • Sources of Mercury Poisoning

    Mercury is widely distributed in nature. It is highly poisonous to both plants and animals. Chronic exposure to mercury has far-reaching effects on human health and the environment.

  • How to Create Bell Curves

    The bell curve is a lay term for what statisticians call a normal distribution; it's called a bell curve because the shape of a normal distribution is in the shape of a bell. According to David...

  • Uses of Bacterial Photosynthesis

    Bacterial photosynthesis is one of the most primitive versions of photosynthesis. It uses organic matter or sulfur compounds as electron donors rather than the ATP (adenosine triphosphate) in...

  • How to Do Geometry Proofs

    According to the Math Forum at Drexel University, writing a geometrical proof is more like writing an essay than performing a set of calculations. Your goal is to clearly state your reasons for...

  • How to Calculate Percentiles on Normal Curves

    Percentiles are used to compare scores across a larger sample, such as a national college admissions test like the ACT and SAT. Your percentile tells you what percentage of people you scored...

  • How to Measure the Water in a Well by Dropping Stones

    For deep wells, it can be difficult to determine the depth of the water because you cannot see the bottom. However, using physics it is possible to calculate the depth of the water because once...

  • How to Calculate the Steradian

    The steradian (sr) is the SI unit of the solid angle (Greek letter Omega). According to calculator.org, one definition of a solid angle is a certain area (for example, a circle) on a sphere's...

  • What Is a Tachometer?

    The tachometer is an instrument used for measuring rotational speed. The speed measured is usually that of a rotating shaft being driven by an engine. Tachometers are commonly installed in sports...

  • Properties of Natural Rubber

    Look around and you will probably see many rubber products around your house. The rubber in most of our products is not pure natural rubber but a processed form of rubber to make it hardier....

  • Lithium Poly Vs. Lithium Ion Batteries

    Lithium ion batteries began appearing in the early 1990's. They have the highest energy density of all rechargeable batteries. But due to safety concerns, developers had to incorporate special...

  • Levitation Effects

    Historical accounts of levitation are recorded in paranormal studies, though few if any have been confirmed as actual happenings. Interestingly enough, scientists in the field of quantum physics...

  • Heat Pump Diagnosis

    A heat pump heats or cools a building by conveying heat from or to the outdoors. Heat pumps are widely used for heating in moderate climates.

  • What Is the Value of the Self-Ionization Constant of Water?

    Water is a simple molecule with profound physical and chemical properties. One property, its ability to split into two ions (ionization), provides us with a method to determine the acidity or...

  • How to Find the Pressure in a Fluid at a Given Depth

    Fluids are everywhere. Did you know that gases, in addition to liquids, are considered fluids? Knowing how to calculate the pressure at a depth within a fluid is an important skill to have in...

  • How to Convert Numbers to Scientific Notation

    Scientific notation is all over the place in... well, science. The reason it's very useful is because it's a compact way to write very big or very small numbers. Up until the late 1700's, people...

  • Digestive System Organs & How They Work

    The digestive system functions to process food completely, so that the body can easily absorb the nutrients we need to live and grow. The organs involved work together in perfect harmony, which...

  • Procedure for a Titration Lab

    A titration lab is performed to determine the pH of a solution by finding the endpoint of a reaction. To perform a titration lab, you will need a burette, beaker, litmus paper, indicator solution,...

  • Weapons Used in the Alamo

    The Battle of the Alamo (1836) in San Antonio, Texas, is celebrated as a battle between a small band of Texas defenders against a large, invading Mexican army. The weapons used were as varied as...

  • How to Create a Function Graph

    Prior to taking calculus, students must contend with equations. Once they reach that higher level of math, however, they learn a new mathematical construct. A function associates one and only one...

  • How to Determine if a Mathematical Function is Even or Odd In Overall Behavior

    Knowing the overall behavior of a graph can be important, especially in higher math when you need to know limits and larger trends. Determining if a function is even or odd in overall behavior is...

  • How to Find the Domain of Any Function

    First of all, definitions. The domain of a function is all of the values that 'x' can take. When I say 'can take', I mean the values that when plugged into the function will make mathematical...

  • Quality Learning Tools

    Quality learning is important in schools and in education today. School districts are often cutting back on the amount of time each subject has or on the amount of days per school year. At the...

  • What Are the Functions of the Body Systems?

    The human body is a wondrous creation, a machine with nearly perfect efficiency. More than a dozen systems of organs and tissues work together to give us life.

  • Function & Anatomy of Human Testes

    The testes are the primary sexual organs of the male body. Each produces millions of sperm and large amounts of hormones throughout a male's lifetime.

  • Buffers & Their Properties

    Buffers are simple systems of molecules that have profound implications in living cells and test tubes. Without them, cells would not survive and biochemical research would be flawed.

  • Research Projects for AP World History

    Advabced Placement (AP) World History is a great way to expand your knowledge on other countries' histories. Though many people think specifically of European history outside of American history,...

  • Application of Newton's Laws of Motion

    Sir Isaac Newton (1642-1727) may be best known for the story of "discovering gravity" when an apple fell on his head. He also outlined the three laws for motion that are necessary to the study of...

  • Define Biophysics

    Biophysics are the study of organisms on the planet, and how they interact with other living things and ecosystems. Biophysics focus on everything from the molecular level to the fully developed...

  • What are Acids & Bases?

    Acids and bases play a critical role in the fields of biology, chemistry, biochemistry and physiology. To understand the intricate details of these areas of study, you must first understand acids...

  • What is Coenzyme A?

    Coenzyme A (or CoA) is an essential assistant to several critical enzymatic processes in the human body. It is usually found linked to carbon chains destined for further processing, and in this...

  • How a Teacher Deals With Conflict

    Teachers handle conflicts on a daily basis. They handle conflict in the classroom between students, and between themselves and students, administrators, and parents. They use different strategies...

  • How to Define Sample Size

    Selecting a sample from a population takes many factors into account, including cost, confidence level, and sampling method. In simple random sampling without replacement, defining the smallest...

  • How to Grow a Culture in a Petri Dish

    Growing a bacterial culture in a petri dish is not difficult and can be done in the classroom and at home if you follow the proper steps and guidelines. Bacteria are living things that require...

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