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
A "what if" analysis occurs when a Microsoft Excel user changes the values of cells to see alterations of formulaic outcomes elsewhere on the worksheet. As of November 2014, three different types of "what if" analysis tools come with Excel, including scenarios, data tables and "Goal Seek." This type of programming allows users to budget for future scenarios, determine prices of items to meet financial goals and more.Full Answer >
One example of the Bernoulli equation in action is airplane wings. The design of an airplane's wings cause the pressure below the wing to be greater than the pressure above the wing. This creates an upward lift towards the area of lower pressure.Full Answer >
Warm air can hold more water vapor than cold air. The higher the temperature of the air, the greater the capacity it has to hold water vapor.Full Answer >
Sand has more mass than water for the same amount of volume that is present. Dry sand has a density between 1,281 and 1,602 kg/cubic meters, and water has a density of 1,000 kg/cubic meter.Full Answer >