Star Chromatography Lab

When a beam of sunlight passes through a specially shaped glass object called a prism, the rays of different wavelengths are bent at different angles. The bending breaks up the sunlight into a beautiful band of colors. This band contains all the colors of the rainbow and is called the visible spectrum. At one end of the spectrum, the light appears as violet. It consists of the shortest wavelengths of light that we can see. Farther along the spectrum, the light has increasingly longer wavelengths. It appears as blue, green, yellow, orange, and red, each shading into its neighboring colors in the spectrum. The longest wavelengths of light that we can see appear deep red in color. Some descriptions of the spectrum also mention the color indigo, which is closely related to blue, between violet and blue.

When light from a hot solid, liquid, or dense gas passes through a cooler gas, it will produce a/an _________ spectrum.

This light is known as the spectrum emission color of an element which can also be used to identify an element as well as determine the energy that is given off. In this lab we used this information to identify three unknown substances and determine if the energy given off was high or low. In order to conduct this lab we had to take a known substance for example Copper Chloride (CuCl) and use a splint to put the substance over a bunsen burner. We then recorded the frequency, color of the flame, and the spectrum emission line by using spectroscopes, which diffracts light.

14. Different levels of brightness are due to different levels of heat, and different distances.

2- It is impossible to identify all element with the naked eye because they don’t release enough energy, therefore the color is not as visible. Besides, not all elements give a light that it is in the visible part of the spectrum, so we need to use a prism.

5. On what kind of diagram are stars plotted according to their surface temperature and luminosity?

[27] Scientists can determine what a distant star is made of by looking at ____.

In this paper I will explain how astronomers determine the composition, temperature, speed, and rotation rate of distant objects using various methods. I will explain the properties of stars. I will also summarize the complete lifecycle of the Sun and determine where the Sun is currently in its lifecycle.

Figure 3 plots the relative overall response of the Spectronic 20, the relative response of a phototube, and the relative lamp intensities as a function of wavelength. The Spectronic 20 response curve shows a maximum relative response at 512 nm with a transmittance of 88.3%. The phototube response curve shows a maximum relative response at 400 nm with a transmittance of 100%. This means the light source used in Part A emitted green light stronger than any other wavelengths and the phototube

In her papers and her thesis, Cecilia wrote about how elements in stars remained relatively the same, with some variation in their spectra, meaning that the stars may be composed of hydrogen and helium, rather than elements such as nitrogen, oxygen, silicon and iron that are abundant on earth. A leading astronomer, Otto Struve, had later acknowledged Payne’s work to be the “undoubtedly the most brilliant PhD thesis ever written in astronomy”. She also assisted in initiating the field of astrophysics by bringing

Cooler stars emit heat in the infrared area of the electromagnetic spectrum, and thus, they appear to be red. It should also be noted that hot stars radiate energy at the ultraviolet and blue areas, making them appear white or blue. The surface temperature of a celestial object can be determined by using the relationship between the wavelength of the light and the temperature of the blackbody and in the case of an increase in temperature, the tip of the spectrum becomes shorter in

Light is electromagnetic radiation, energy shown as a wave or a particle, that can be visually perceived as radiant energy.1 Light is measured by the wavelength and frequency. A wavelength is the distance from any point on one wave to the same point on the next wave and shown by lambda, λ.2 The different types of light begins with gamma rays and proceed to radio waves when increasing wavelengths are compared. Frequency is the number of crests per second and is expressed in hertz and shown as v. The pattern associated with light is indirectly related to the wavelength. The variability of light starting with gamma rays and ending with radio waves is connected by decreasing frequency. Frequency is independent of the wavelength and are both

Annie Jump Cannon was most famous for developing a star spectra that is still used today. Many astronomers remember the order of the star spectra by “Oh Be A Fine Girl Kiss Me” (Annie Jump Cannon theorist of star spectra, n.d.). Some people call her the “The Census Taker of the Sky” (drfate0000,2014),and cataloged many stars in her lifetime (Census taker of the sky, 2014). She rearranged Pickering’s order for the star spectra (Annie Cannon, 2015). She examined and classified bright southern hemisphere stars (Annie Jump Cannon theorist of the star spectra,

In this experiment, paper chromatography was used to determine what pigments were present in spinach extract. From this experiment, we can see that four different types of pigments are present in the spinach extract used, the following are those pigments: chlorophyll a, chlorophyll b, beta carotene, and xanthophyll. The absorption and reflection of these pigments all revolve around the basis of the electromagnetic spectrum. The form of electromagnetic radiation is released as light and overall it is a type of energy that travels in waves. Going back to the spectrum itself, all the different types of electromagnetic radiation combine to form the electromagnetic spectrum, which tells us which colors can be absorbed and/or reflected. Each wave

With today’s science, light becomes more specifically perceived as a spectrum. The specific name for this spectrum is the electromagnetic spectrum, which contains many types of waves (NASA, Electromagnetic Spectrum). In Figure 2, the spectrum shows a variety of wavelengths with specific wavelengths classified by its length. The range of wavelengths humans can see wavelengths that are around 400 – 700 nanometers (nm) as colors while all other electromagnetic waves are simply blind to humans. The interesting classes for light that are used to measure are microwave and infrared light. The laser is