Spectral analysis measures and analyzes the properties of matter based on the material's interactions with electromagnetic energy. In chemistry and physics, this process is known as spectroscopy. Spectroscopy is of particular use in astronomy, where it is used to determine the chemical composition of celestial objects.Know More
Visible light, magnetic resonance, infrared radiation, X-rays, gamma radiation and ultraviolet radiation are all elements of spectroscopy. Examining the interaction between matter and these different kinds of light reveals different properties about the matter. Research scientists use spectroscopy to detect different types of matter. Astronomers rely on spectroscopy to see objects that do not emit visible light.
Spectroscopy works because different chemical bonds vibrate at different wavelengths when exposed to radiation. Scientists examine the pattern of vibration to determine the chemical makeup of the matter under analysis. A spectroscope is the instrument researchers use to view this pattern.
In addition to its use in astronomy, spectroscopy is a valuable tool in quantum and high-energy physics, crystallography, laser and maser technology, and determining the age and weathering of exposed wood. Molecular spectroscopy is the technology that led to the development of the laser. Spectroscopic analysis of hydrogen allows the development of quantum electrodynamics and the study of increasingly small subatomic particles.Learn more about Physics
One simple Newton scooter propels itself forward by ejecting air from a balloon. Attach a tubular balloon to the body of the scooter with the mouth facing backwards. When the air shoots out the back, the scooter will move forward, in accordance with Newton's law.Full Answer >
In the theory of relativity in the study of physics, the interval between two events is called proper time. Proper time is based on a clock that measures both events.Full Answer >
There are many different branches of modern physics, including astrophysics, nuclear physics, biophysics, mathematical physics, as well as optical and laser physics. Physics is the study of matter and energy and how they relate and interact through space and time, which also includes more theoretical branches such as high-energy experimental physics.Full Answer >
To calculate the normal force on an object, draw a free body diagram, determine the surface's angle, factor in the other present forces, and solve for the normal force. Note that the normal force is perpendicular to the surface the object sits on.Full Answer >