• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month

# To measure the speed of light in an experiment available to do at school.

Extracts from this document...

Introduction

The aim of this experiment is to measure the speed of light in an experiment available to do at school. The principle is quite simple. Let a ray of light strike a rotating mirror that reflects the light three meters away to a second mirror, so that the light is reflected back at the rotating mirror and back to the laser. The rotating mirror has during the time it took for the light to travel the six meters to the second mirror and back rotated some degrees and the light spot has moved from the origin. ...read more.

Middle

When we did the experiment and measured, x was measured to approximately 3.0 mm - 3.5 mm. So we know that the velocity of light is the distance it travels divided by the time it takes ( c = d / t ), and the distance is 30 meters since the light should travel to the second mirror and back. The how do we know how long time it takes? ...read more.

Conclusion

* ( 1 / 512 ) = 9.32E-8 Then, c = d / t = 30 / 9.32E-8 " 321719678 m/s " 322 000 km/s When we are measuring these small distances with a ruler, and using such high velocities as the speed of light, it is very hard to be precise and the result may vary quite much. According to the book the velocity of light is 299,792,458 m/s, so it wasn't that bad measured, but on the other hand, the difference is approximately 22,000km/s which is a very high velocity. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Sylvia Plath section.

## Found what you're looking for?

• Start learning 29% faster today
• 150,000+ documents available
• Just £6.99 a month

Not the one? Search for your essay title...
• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month

# Related GCSE Sylvia Plath essays

1. ## 'Disaster in the Alps'- To compare the way three news publications, The Times, The ...

He also described the bodies of the victims as being "torn apart" beneath "sheets of metals." Another short interview was from a fire services spokesman who "grimly" stated that the "official" death toll had now reached "20". Even though these two interviews were quite brief, they provided a candid and

2. ## Creative writing - Through The Mirror at Midnight.

As I walked into class, I peered around. Brittany glanced up at me as I walked into class, then she lowered her eyes again quickly. The rest of the day went slowly. Beads of sweat covered my forehead when I did not know how to solve the maths problem, which Ms.

• Over 160,000 pieces
of student written work
• Annotated by
experienced teachers
• Ideas and feedback to