Science

Calculating the weight of lead, given the density of lead, is a matter of finding the volume of the lead object of interest, and then multiplying lead's density times the object's volume. The...

A holographic image contains information about the shape, size and contrast of the object being imaged. Information about the image is stored in a microscopic pattern of interference that is...

The goal of a biological diagram is to represent how different parts of a specimen relate to each other, as opposed to what they actually look like. Drawing diagrams allows biology students to...

Visible light normally travels through air. Occasionally light passes through a transparent medium like glass or water. Most of the light strikes the medium perpendicular to the surface and passes...

A cylinder is a three-dimensional solid geometric object having two circles as the top and bottom basis. The distance from the top to the bottom is referred to as the cylinder length or height....

Every object has a certain weight and mass. The weight of an object is proportionate to gravitational force that pulls the matter and the mass is the amount of matter in an object. While weight...

The spring scale and the balance both measure the weight of an object. The balance compares the weight of an unknown object with that of a standard weight. The spring scale compares the...

Electroplating is a chemical process that coats a conductive object with another material using electrical current. The electrical current reduces one material and causes it to precipitate onto...

Every object or being has a certain weight. With the use of different weighting scales, like balances, medical scales, pneumatic scales or spring scales, weight can be measured in units (like...

If we measure a pound of feathers and a pound of lead and drop them from a second story, one object will float to the ground and the other will drop so fast it could injure passers-by. The...

Physics and math classes have questions on lateral magnification in lessons teaching about angles and lenses. Lateral magnification also has a use in determining the power of a microscope or...

Weighing scales measure a substance's weight without regard to the substance's volume. The ability to calculate weight independently of volume allows for accurate measurements in cases where...

The density of an object is the ratio of its mass to its volume. If you can measure the mass and the volume of an object, you can determine its density. Since each substance has a specific density...

The three laws of motion were put forth by Isaac Newton the 17th century and have proven to be fundamental in the formation of classical physics.

Simple machines are tools that make work easier. The six types of machines are the lever, the wheel and axle, the pulley, the inclined plane, the wedge and the screw. Each simple machine has very...

Density is an important physical characteristic of matter. All objects have density and that density can increase or decrease as the result of actions taken on the object. The effects of density...

All living things have carbon in their molecular structure. Carbon 14 results from cosmic rays sending thermal neutrons toward Earth. These interact with nitrogen in the atmosphere to produce a...

Ever wonder why oil floats in oil and vinegar dressing? Or how airplanes made of steel stay afloat in the air? The density of an object determines if it will float. From gemstones to various...

A microscope allows a user to look at objects too small to be noticed by the unaided eye. It consists of several parts.

Magnifying lenses are constructed of convex lenses, typically made of some type of clear glass or plastic. In most cases, images are magnified either by a microscope or by a magnifying glass.

Electroplating is a chemical reaction that places a thin coating of one metal to onto the surface of another metal. Electroplating is often used to create cheap jewelry, but it now being used more...

Density is the mass of an object per its volume. Often, people confuse mass and density. Density is not the mass of an object, but how much matter is in an object compared to its volume. For...

Density is a property of matter that is relative to the object's mass and volume. Density is a factor when determining properties like buoyancy. Because of its buoyancy application, experiments...

Wind tunnels are structures used in aerodynamic research that enable scientists to study the effects of air on stationary objects. This is useful in the manufacturing of airplanes and cars, as...

To calculate rotation is to calculate the rate at which an object spins around its axis. The amount of energy required to keep an object rotating increases in proportion to the mass of the object...

Sir Isaac Newton was a mathematician and physics scholar who transformed our scientific world. In 1666, Sir Isaac Newton developed the theories of gravitation when he was just 23 years old. Then,...

Microscopes have been around for centuries and have advanced over time to allow for closer examination of smaller and smaller objects. Today, powerful microscopes can examine cell contents and...

Specific gravity is a unit-less measure, defined as the ratio of the density of an object divided by the density of water at a specific temperature. sually the temperature used is 4°C or...

Hand lenses / hand magnifiers are very useful tools for studying small objects such as rocks, flowers, or bugs. Young children especially benefit from the use of a hand-held magnifier as they are...

A pendulum is one example of simple harmonic motion. Other common examples are a weight bouncing up and down on a spring, a vibrating guitar string and the Earth going around the sun in its...

Density is technically defined as the mass of an object divided by its volume. Essentially, it is a measure of how tightly packed the molecular structure of an object is. Density is why a cubic...

Density is defined as the ratio of an object's mass to its volume. Formally, if p = density, m = mass and V = volume, then p = m/V. Every element has its own unique density based on its molecular...

Magnification refers to the ratio between the apparent size of an object (the size of the image of the object) and the object's true size. Thus magnification is a unit-less number. Magnification...

The density is the ratio of the mass of a solid object to its volume. The mass is easy to get by weighing the object on a scale. However, the calculation of the volume could be challenging if the...

Understanding strain in materials is simple: when you apply force to an object, the object deforms. In its most basic form, called normal strain, strain is the ratio of the change in the length of...

The mass of an object needs to be divided by its volume to calculate the density. Calculation of the volume of an irregular object from its dimensions is not feasible. However, such a volume can...

A clinometer is an instrument used to measure indirectly the height of objects at a distance. Clinometers take advantage of the geometry of triangles to allow you to determine height visually...

The laws of motion, established centuries ago, were developed to describe why objects move and continue to move. They help scientists mathematically explain planetary motion, and they connect mass...

Density is the term given to describe an object and the amount of matter packed into a certain amount of mass. Density is also used to describe the weight of an object. For instance, the weight of...

Buoyancy, or buoyant force, is based on Archimedes' Principle. This principle states, "Any object, wholly or partly immersed in a fluid, is buoyed up by a force equal to the weight of the fluid...

Polarimeters are used to measure the polarization of transverse waves as they exit an object. This almost always refers to the way light refracts as it enters and leaves a transparent object, such...

The equation to calculate momentum is simple: P=M*V, where P stands for momentum, M stands for the mass of the object and V stands for the velocity of the object. So, the momentum of an object is...

The monochromatic and coherent nature of lasers makes them interesting. Coherence means the production of pure waves, all in phase. This is unusual; other light sources create a jumble of waves,...

The incline plane is one of the six simple machines that has come down to us from ancient times. In the simplest terms, an incline plane is a flat surface that is higher at one end than it is at...

Microscopes are a crucial tool in the study of biology. Understanding the mechanism and use of microscopes is a must for comprehensive study of the science. Microscopes work by expanding a...

Magnification power measures how much larger an object appears after magnification. Those who typically speak about magnification are scientists and perhaps bird watchers or photographers....

Electroplating works using the principles of electrochemistry. By running an electric current through a solution of a metal, it is possible to cause metal ions (which are dissolved in solution) to...

Temperature can be measured in a number of different ways, and the infrared thermometer does it by analyzing infrared radiation that comes off of an object. Nearly every object emits infrared...

The pulley is a simple machine. The purpose of a pulley system is to be able to move a heavy object with less effort. It is made up of a rope or belt that is wrapped around wheels. The wheels are...

To understand how zero gravity works, you first have to understand Newton's third law of motion. Newton's third law tells us that if one object pushes or pulls on another object, that other object...