Finding Green Light Wavelengths for Dissertation

Click For Summary

Discussion Overview

The discussion revolves around the wavelength of light emitted by green bulbs, specifically focusing on whether these bulbs emit pure green light and how to achieve a narrow wavelength range of 520-560 nm for a dissertation project. The scope includes practical applications and potential solutions for measuring or filtering light wavelengths.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Homework-related

Main Points Raised

  • One participant questions the specifications of the "green bulb," suggesting that without more information, it is impossible to determine the light's characteristics.
  • Another participant recommends using a spectrometer to measure the wavelength spread of the light emitted by the bulb.
  • It is suggested that testing the bulb with a spectrometer or referring to the manufacturer's specifications is necessary to understand its output.
  • Some participants propose considering different types of LEDs that emit in the green range, noting that achieving a narrow band may require heavy filters.
  • A participant expresses concern about budget constraints and seeks alternative solutions, such as using filters or paints to narrow the light spectrum.
  • There is a mention that manufacturers often do not provide detailed specifications for bulbs, complicating the inquiry.

Areas of Agreement / Disagreement

Participants generally agree that testing the bulb is necessary to determine its wavelength characteristics, but there is no consensus on the best method to achieve the desired light filtering or measurement without a spectrometer.

Contextual Notes

The discussion highlights limitations related to the lack of detailed specifications from manufacturers and the participant's budget constraints, which may affect the feasibility of suggested solutions.

Who May Find This Useful

This discussion may be useful for students or researchers interested in light wavelengths, practical applications of light filtering, and those facing budget constraints in experimental setups.

Ballo
Messages
2
Reaction score
0
Hi sorry if this is very basic, I am an animal final year student and have come across a problem for my dissertation. I am looking at wavelength of light. Now the question, is a green bulb purely giving off green light, ie if it more blue green is it giving of predonimantly light of around 500 nm where as 560 nm equals a darker green. I need as close to 520-560 as possible while excluding as much as possible of other wavelengths. I thank you for your help in advance
 
Science news on Phys.org
Ballo said:
Hi sorry if this is very basic, I am an animal final year student and have come across a problem for my dissertation. I am looking at wavelength of light. Now the question, is a green bulb purely giving off green light, ie if it more blue green is it giving of predonimantly light of around 500 nm where as 560 nm equals a darker green. I need as close to 520-560 as possible while excluding as much as possible of other wavelengths. I thank you for your help in advance

There is no way to answer this since you have not provided more info on your "green bulb". We have no way of knowing the specs of the light source. Did you buy something off the shelf at a hardware store, or is this a $10,000 piece of light source with a monochrometer?

Pass the light through a spectrometer and look at the spread in wavelength. That should tell you off the bat the bandwidth.

Zz.
 
You will need to test the bulb in question, either using your own spectrometer, or from the manufacturer's specifications. You may also want to look into LED's, there are several different kinds that emit in the green range. But with the narrow band you want I suspect that you would need some heavy filters even with a green LED.
 
Hi, thanks for the replies. I don't have a spectrometer and was hoping for an off the shelf answer as I am on a very limited budget. Would photographers do a filter that could narrow down enough or is there any other answer, even a paint that could be put on a bulb. I was hoping it would be as easy as an ultra violet light to purchase. I know it all a bit vague but I can't go into to much detail without giving the game away.

Manufacturuers don't tend to put much detail on the bulb.
 

Similar threads

  • · Replies 19 ·
Replies
19
Views
3K
  • · Replies 6 ·
Replies
6
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 31 ·
2
Replies
31
Views
7K
  • · Replies 7 ·
Replies
7
Views
5K
  • · Replies 11 ·
Replies
11
Views
3K
  • · Replies 21 ·
Replies
21
Views
3K