I need help with the following questions: Lab: Double-Slit Interference PRELIMIN

Question

I need help with the following questions: Lab: Double-Slit Interference PRELIMINARY QUESTIONS 1. What does the acronym LASER stand for? What characteristic of a laser makes it suitablefr today's experiment? 2. What is meant by constructive and destructive interference? 3. Why do you see colors when you look at reflected light from a CD or DVD disk, or when you look at a soap bubble or oil film on water? 4. What do you think causes the colors on the artwork panels on the side of HLS2 (Health Sciences building) which change with time of day and the angle from which you view them

Explanation / Answer

1) LASER= light amplification by stimulated emmision of Radiation

characteristics:

1)used monochomatic light(single wave length)

2) sharply focused in direction

3) highly coherent ( can be used several kilometer long)

4) brightness( power emitted per unit area is more)

+++++++++++++++++++++++++++++++++++++++++++++++++

2) costructive interferance:when two wave meet together if the crest is overlap with crest and trough is overlap with trough then the interferance is called constructive interferance.

destructive interferance: crest ia overlap with trough when the two wave meet then the inerferance is called destructive interferance.

++++++++++++++++++++++++++++++++++++++++++++

light consits of different colour having different wave length and frequency.

due to the scattering of light in different angle we see different colour

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

---