Essay on Spectroscopy

Spectroscopy is the study of light. A spectrophotometer is a machine used to determine the absorbance of light at any given wavelength. It does this by using a source of white light through a prism, which gives multiple wavelengths that can be individually focused (Ayyagari and Nigam, 2007). Substances are put into cuvettes that are glass or quartz containers that light can easily travel through. The light that is being focused travels through the substance gets absorbed by the

Evers, D. J., B. Hendricks, G. Lucassen, and T. Ruers. "Optical Spectroscopy: Current Advances and Future Applications in Cancer Diagnostics and Therapy." NCBI. National Center for Biotechnology Information, 8 Mar. 2012. Web. 13 Sept. 2015.

Kepler -452b is believed to be a rocky planet and is said to be made up of a mix of silicon, carbon, magnesium and iron (elements found throughout Earth and other rocky planets) with active volcanoes, can keep water and oceans and an atmosphere that can hold gases. Simulations can prove that Kepler -452b is habitable as CO2 concentrations in its atmosphere are comparable and slightly lower than in Earth present day. With the help of models and research, we can assume that the planet is very likely to have a dense atmosphere due to it’s size and is too likely to carry liquid water. In addition, the sky is most probably blue similar that of to earth and if there were to be molecular oxygen in the atmosphere - produced by photosynthesis -, it could suggest native plant growth and can also host and allow Earth’s plants to photosynthesize due to the similarity of suns. Therefore, not only can learn to grow the local flora, but bring Earths to sustain ad create a greenhouse and/or gardens.

Spectrometer – A spectrometer is a device which takes in light and then breaks down light into the various components of the electromagnetic spectrum.

The main point of lecture was to continue discussing about the light spectra and atoms. Specifically, we used the equations and calculated a photon of light’s energy at a certain wavelength. Also, we discussed the light spectrum and how particular wavelengths of light are absorbed by matter.

The dyes in the laboratory experiment are made of numerous colors, mainly red and blue, the spectra from each of the dyes corresponded to the wavelengths obtained from each of dye i.e. 620 nm for red and 450 nm for blue.

There has not been safety professional at Podunk University for a year and half, leaving the prestigious university to fend for itself in the world of safety. Since no one was actively filling this position, the subsequent safety professional will have a lot of catching up to do. The primary focus of the safety professional will be the hazardous material and hazardous waste issues on the campus. While conducting the preliminary tour of the campus, it is noticed that there is a lot of issues that are effecting safety around the campus. The biology department and the chemistry department will need to have all chemicals inventoried to include hazardous waste. The physics department’s use of high voltage and the use of lasers in their department. The automotive technology department has more than a few issues that will need to be addressed while developing the safety program. The last major issue that was identified was the Massive Arena, the building is one of the oldest buildings on campus and is currently under renovation. The problems with many older buildings is the presents of asbestos insulations and the dangers that it presents even while being removed.

AAS has contributed to the understanding of elements having different absorption emission spectra due to their difference in energy levels. In the absorption spectrum, the absorbed light are shown as black gaps. As the number of electrons increase, the number of spectral lines also increase. Hence, by measuring the absorption of light, the concentration of the element within a sample can be determined. By knowing the concentrations of an element, scientists are now aware that even the smallest amount can make a significant impact towards the biological system. Therefore, scientists have brainstormed ways to monitor the use of chemicals in the

Part A shows how limited the range of the Spectronic 20 spectrometer is. It did not measure transmittances below 400 nm or above 575 nm. This means the light source emitted those wavelengths of light so weakly they were not detected by the instrument.

A spectrophotometer is an instrument which measures the amount of light of a specified wavelength which passes through a medium. This instrument is usually used for the measurement of reflectance of solutions. Light is separate into different wavelengths and is being passed through the sample solution. The sample solution will have its own wavelength and will absorb a certain amount of light. The higher the molecular concentration, the higher the absorbance value.

Spectrophotometry is a routine laboratory test that has the added advantage of being able to

A spectrophotometer called the Spec 20 and the Beer-Lambert law is used to determine the concentrations of solutions. The Spec 20 is used to measure the amount of light that passes through a solution. This is measured in terms of absorbance which is the amount of light a solution absorbs or transmittance which is the amount of light that passes through a solution. The relationship between absorbance and transmittance is A= -log T or A=2-log (%T).

Within the data, it is to be noted that widely across different elements, the amount of frequency and wavelength are similar to colors diverse from the one’s element. The energy for Neon at blue was, 4.23×10-19J, and the energy of Argon was 4.42×10-19J. Wavelengths with similar wavelengths have equal to or close to the same amount of energy and or frequency. Within this lab, there was equipment failure with the spectrometers. Most of the data collected in terms of wavelength was attributed to a diagram stating the correct wavelength for a given element’s color. The spectrometers were proven to be an ineffective way to measure the wavelength of the atoms of a given element because multiple lab groups had the same error in their observations.

Every chemical has a unique set of spectral lines just like every person has a unique set of fingerprints. Although these two things seem very similar, they are not completely the same. There are many different chemicals, but all atoms of one specific chemical have the same set of spectral lines. This is different than people’s fingerprints because of the 7.4 people on earth, no two fingerprints are alike. With the chemicals, many atoms with the same spectral lines form to create the chemical. Although this makes them somewhat different, the technique of identifying chemicals by their spectral line patterns with that of identifying people by their fingerprints is very similar because every chemical has a different set of spectral lines just

Astrophysics is the branch of astronomy that employs the principles of physics and chemistry to ascertain the nature of the heavenly bodies, rather than their positions or motions in space. A few of the objects studied are the Sun, other stars, galaxies, extrasolar planets, the interstellar medium and the cosmic microwave background. The study of our very own Sun has a special place in observational astrophysics. Due to the tremendous distance of all other stars, the Sun can be observed in a kind of detail unparalleled by any other star. Our understanding of our own Sun serves as a guide to our understanding of other stars. Their emissions are examined across all parts of the electromagnetic spectrum, and the properties examined include luminosity, density, temperature, and chemical composition. Because astrophysics is a very broad subject, astrophysicists typically apply many disciplines of physics, including mechanics, electromagnetism, statistical mechanics, thermodynamics, quantum mechanics, relativity, nuclear and particle physics, and atomic and molecular physics.