# "Solving Light Problem with Wavelength 635 nm

• fallen186
In summary, the problem involves using light of wavelength 635 nm to illuminate two glass plates that are separated by a wire of radius 0.02 mm. The question asks for the number of bright fringes that appear along the total length of the plates, which is 16 cm. Using the equation 2d = (m + 1/2)*lambda, where d is the distance between the plates and lambda is the wavelength, the solution is found to be 125.984 or 125 bright fringes. However, this answer may be incorrect as the length of the plates is not taken into consideration.
fallen186

## Homework Statement

Light of wavelength 635 nm is used to illuminate normally two glass plates 16 cm in length that touch at one end and are separated at the other end by a wire of radius 0.02 mm. How many bright fringes appear along the total length of the plates?

## Homework Equations

http://www.phys.washington.edu/users/savage/Class_123/Assigns_123_99/***_99_6/soln99_6/node6.html <-- Same problem except with different numbers and it has a shows solution.

$$2d = (m + \frac{1}{2})*\lambda$$

$$2* 0.04mm = (m + \frac{1}{2}) * 635 nm$$

$$\frac{0.08 mm}{635 nm} = (m + \frac{1}{2})$$

$$125.984 = m + \frac{1}{2}$$

m = 125.484 or 125

yet I get the answer wrong

Here m is not the number of bright fringes. What about the length 16 cm?

I would first check the calculations and equations used to solve the problem. It is important to make sure that the units are consistent and that the equations are applied correctly. I would also consider any assumptions made in the problem and make sure they are valid.

If the calculations and equations are correct, I would then look into the possibility of experimental error. This could include factors such as the accuracy of the equipment used, the conditions in which the experiment was conducted, and any human error that may have occurred.

If the experimental error is ruled out, I would consider other factors that may affect the results. For example, the thickness of the wire may have an impact on the number of fringes observed. I would also consider the possibility of interference from other light sources or objects in the experiment.

In order to accurately solve this problem, it may be necessary to repeat the experiment multiple times and take an average of the results. It may also be helpful to consult with other scientists or experts in the field to gain further insights and perspectives.

Overall, as a scientist, I would approach this problem with a critical and analytical mindset, carefully examining all factors that may affect the results in order to provide an accurate and reliable response.

## What is the significance of a wavelength of 635 nm in solving light problems?

The wavelength of 635 nm is significant because it falls within the visible light spectrum, making it easily detectable by the human eye. This allows for precise measurements and analysis of light-related problems.

## How is solving light problems with a wavelength of 635 nm beneficial in scientific research?

Solving light problems with a wavelength of 635 nm is beneficial in scientific research as it allows for the study of various phenomena such as refraction, diffraction, and interference. It also provides valuable information about the properties of matter and the behavior of light.

## What instruments are commonly used to measure a wavelength of 635 nm?

The most commonly used instruments to measure a wavelength of 635 nm are spectrophotometers, interferometers, and diffraction gratings. These instruments can accurately measure the wavelength of light through various techniques such as absorption, interference, and diffraction.

## Can a wavelength of 635 nm be used in practical applications?

Yes, a wavelength of 635 nm has practical applications in various fields such as telecommunications, laser technology, and medical imaging. It is also commonly used in everyday devices such as laser pointers and barcode scanners.

## Are there any other wavelengths that are commonly used in solving light problems?

Yes, there are several other commonly used wavelengths in solving light problems, such as 450 nm (blue), 550 nm (green), and 650 nm (red). Each wavelength has its own unique properties and applications, making them useful in different scenarios.

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