Spectroscopy Lab Report

From this graph and chart we can see that the higher the concentration the higher the absorbance, all the different concentrations were tested at the same wavelength (625nm). Also we can determine our unknown substances concentration by using the absorbance we got for it. The red dot on the graph followed by the line towards the horizontal axis indicates that the concentration of fast green was 34% or 5.1x10-3.

3. The spectrophotometer was set at 420nm. Distilled water was also used as the ‘blank’.

The area on the H-R diagram where “normal” stars can be found is known as the _________.

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

As you can see in the first line of the graph it is illustrated that color came off more of the red hues. The results for the 1st Fraction (or pass through the sand) were consistent and turned out as expected. The light brown hue indicated that the sand had separated some of the color/dye. The 2nd Faction were also consistent with expectations.

The gamut shows that the accuracy of the colours red, magenta, blue and cyan are relatively close to their concentration of coloured compound. Rather the green and yellow are not as close to their points in the gamut, making it less accurate to their colour.

To use the Gizmo, you can select the Bar Chart tab, and move the sliders back and forth and see the results on the chart each time you move the slider. First, I selected the Bar Chart tab, and then selected the Color tab. After this, I set the temperature, Light intensity, and CO2 level to random measurements. Next, I set the light wavelength to 450 nm (Which is nearly violet), and it always resulted in the highest oxygen production despite all of the other level measurements. It doesn’t matter if you change the light wavelength to 450 nm first, or if you change the other level measurements first.

During the Atomic line emission lab assignment, my results came out pretty accurate. During the 5th lab it was very fatiguing to determine what the colors were that I had seen. Basically there was a large amount of red. As I went down the line there was a decrease of the rest of the colors, meaning there was more of the red than any other color. As a group we realized this lab emission was a lot like Ge or Germanium based on the spectrum. The first Lab we saw that it was a lot similar to Ce which was Cerium, it is very common to Germanium. With both labs five and 1, you had all the colors except there was no green or violet. Ge had every color except for violet. Our eyes are sensitive to different wavelengths of visible light and we see these

The colours of these stars correspond to surface temperatures they can also be used to trace stellar evolution. The first step to creating a Hertzsprung - Russell diagram is to separate the stars by colour next we sort the stars according to luminosity with the brightest at the top and the faint stars at the bottom. The final plot you see represents the different stages of evolution of stars. Stars spend most of their lifespan burning on the main sequence. When their fuel starts to run out the stars expand to become red giants. Some also find a new source of fuel in helium and burn blue hot, but even that runs out resulting in white dwarfs. So based on images from the Hubble telescope we have assembled a true plot which is a snapshot of the history of stars in this

The first hypothesis stated for this lab was that our wavelength would be around 500 nm for the colored light. The second hypothesis stated was that the full spectrum light will have a better outcome for both photosynthesis and respiration compared to the green lights results. Throughout this experiment both of this hypotheses were supported. The first hypothesis was supported because our colored ended up being533.8 nm which represents the green light. Therefore, the second hypothesis was supported because the full spectrum light did have more linear results compared to the usage of the green light. The full spectrum light had better results with the processes of photosynthesis and respiration. The full spectrum light covers all aspects of

Comparing the hydrogen to lithium, hydrogen is an element with little orbitals compared to lithium. Hydrogen has little amounts of energy levels, so its energy is diagram will

Refer to Figure 2 in order to view a picture of the three different types of spectrums. These different types of spectrums occur due to different reasons, next I will explain what type of gas results into one of the three different types of spectrum. Firstly an emission spectrum is produced by a thin gases in which atoms do not experience many collisions, because of the low density. A continuous spectrum however, results when the gas pressures are higher. Lastly an absorption spectrum occurs when light passes through a cold, dilute gas and atoms in the gas absorb at characteristic frequencies; since the re-emitted light is unlikely to be emitted in the same direction as the absorbed photon, this gives rise to dark lines (absence of light) in

The observed flame colors do correlate with the brightest bands on the atomic emission spectrum for each element. Based on the information from the “ Periodic Table with Atomic Emission Spectra”, which indicates that lithium obtained the brightest band for red, sodium obtained the brightest band for orange, potassium obtained the brightest band for purple, and strontium obtained the brightest band for red. We might account for major differences in observed flame colors due to there are several brightest band on some of the elements such as barium, which obtained red, orange and blue as the brightest bands.

There are seven major spectral types. Stars range from blue and hot to red and cool. The spectral types are: O, B, A, F, G, K, and M (from hottest to coolest). Each of these letters is divided into 10 numerical classes, from hotter to cooler: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. For example, our Sun has the spectral type G2. Spectroscopy is a scientific technique in which the visible light coming from objects (like stars and nebulae) is examined to determine the object's composition, temperature, density, and velocity. The spectrum is the band of colors that white light is composed of, in the order: red, orange, yellow, green, blue, indigo, violet (from long to short wavelength). Newton first discovered that sunlight could be divided into the visible spectrum. The compositions of stars are determined through spectroscopy. Spectroscopy is the study of something using spectra. Recall from the Electromagnetic Radiation chapter that a spectrum is what results when you spread starlight out into its individual

The data obtained from PTF and PESSTO is a combination of flux and wavelength values, with wavelength range typically between 3000 and 9000Å. The flux values had to be de-reddened to account for absorption and scattering of the electromagnetic radiation from the SNe, due to dust and gas present in the interstellar medium and the Earth’s atmosphere. To do this a reddening