• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month
Page
1. 1
1
2. 2
2
3. 3
3

# Measuring density of parrallex objects

Extracts from this document...

Introduction

Measuring distances of a parallax object Research Parallax is when one object seen is in such a position where at two angles they seem to be at the same position. Parallax is usually used in astronomy where stars can be seen in parallax. Apparatus * 4 needles * Plain A4 paper * Cork mat * Plain mirror * Block fixing mirror * Bluetak * Protractor * Full length ruler Diagram Image Pins Cork mat Plane mirror Block fixing mirror Normal line to mirror Object Pins Plain paper Method 1. Place the paper on top of the cork mat 2. Place the protractor on the left edge of the paper so you can make a 90o mark on the paper 3. ...read more.

Middle

Now place a needle on the first normal line and then place a second needle on the second normal line (make sure both of them are in front of the mirrors) 8. Move down so your eyesight is in level with the first needle and below the mirror 9. Pin your third needle down so it lines up with the first needle and when moving head side to side it looks as if it's one needle 10. Do the same with the third needle, lining it with the second needle 11. When placing the third and fourth needle make sure that the pins are placed behind the mirror such that no parallax is observed when moving head left and right; the image in mirror and pin behind mirror is in vision Results ...read more.

Conclusion

Evaluation The results show that the experiment worked well as the two needles matched together (A1 and A3), although the rest weren't exact matches they were really close and can see which one's should've matched. These inaccuracies could've been created by many reasons such as human error, not lining up the needle accurately or not drawing the normal lines or mirror line perfectly at the right degree. This could also be due to the instruments that we had to do our experiment with such as the protractor was worn out so it was difficult to figure where to draw the right lines and also the width of the mirror at the top where I had to make my measurements from was too wide (about 3mm) so this may have caused a minor deviating measurement from the actual measurement. ?? ?? ?? ?? Manpreet Pahal ...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 Forces and Motion 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 Forces and Motion essays

1. ## Approximate Stopping Distances

* The weight of the car and its contents The distances given in the Highway Code may be wrong because they are only averages, what if someone's car is old or the distances may be better than the ones displayed because the car may be very modern and brand new.

2. ## Comparing the density of skimmed milk and homogenised milk

stop the clock when the first part of the drop past the line or when each bit of the drop passed the line. I decided to stop the clock when the first part passed the 10ml line. However this could have been a main reason for the anomalous results as

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