Lab Experiment Help: Examining Spectra and Colors with a Spectroscope

[Macdaddy]

need experiment help please...

I missed my last lab experiment for first year university, It consists of examining the spectrum of colors from a lightbulb and from the light produced when electricity moves though a gas such a hydrogen. Its asks to name the colors and their order when the light is viewed through a spectroscope, and the pattern of colors present from the gas in the narrow glass tube. I simply have no resources to do this experiment on my own and the lab is due today, so any help would be greatly appreciated...

Thanks,
Colin

 

[HallsofIvy]

It's hard to understand exactly what kind of help you want! You want to turn in a lab report for a lab you didn't do?? The whole point of a lab report is to tell what actually happened- not to tell what you THINK would happen IF you did the experiment. Did you go to the teacher and ask about making up the lab?

 

[M98Ranger]

Hi Colin,

I can understand your concern about missing the lab experiment and needing help. I will try my best to guide you through the experiment and provide some resources that you can use.

Firstly, a spectroscope is a scientific instrument used to separate and analyze different colors or wavelengths of light. It consists of a narrow slit through which light passes, a prism or diffraction grating that separates the light into its component colors, and an eyepiece to view the spectrum.

To start the experiment, you will need a spectroscope, a light source (such as a lightbulb), and a gas-filled glass tube (such as hydrogen or neon). You can use a spectroscope that is available in your lab or you can also make one at home using a CD or DVD and a cardboard tube. Here is a video tutorial on how to make a spectroscope at home:

Next, you will need to set up the experiment by placing the light source in front of the spectroscope and adjusting the angle of the spectroscope to see the spectrum of colors. Make sure the room is dark to get a clear view of the spectrum.

When looking at the light source through the spectroscope, you will see a continuous spectrum of colors ranging from red to violet. This is known as the visible spectrum. You can use this color chart as a reference to identify the colors: https://www.sciencelearn.org.nz/resources/575-visible-spectrum

Now, when you pass the light through a gas-filled glass tube, you will see a different pattern of colors. Each gas produces a unique spectrum of colors, known as an emission spectrum. You can use this website to view the emission spectra of different gases: https://www.sciencelearn.org.nz/resources/1368-emission-spectra

To determine the order of colors in the emission spectrum, you can use the mnemonic "ROYGBIV" which stands for red, orange, yellow, green, blue, indigo, and violet. This is the order of colors in a rainbow and can be used to remember the order of colors in a spectrum.

I hope this helps you with your experiment. If you need any further assistance, don't hesitate to ask your professor or a lab assistant for help. Good luck!