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AS Phys Prac Errors & Improvements

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$!$RatJumper$!$:
Guys we all know how frustrating those errors and improvements can be on the last page of a physics prac lol
Have you guys got any tips or certain things to remember when writing down these errors and improvements? I've looked at a lot of past paper questions and there seems to be a variety of different things in each practical that you can write, but the thing is, i would have never thought about some of those in an exam. So if you have anything that would help please share!

Thankx :)

elemis:
Repeat the experiment ?

When measuring things use a measuring apparatus with a lower uncertainty.

$!$RatJumper$!$:

--- Quote from: Ari Ben Canaan on October 24, 2010, 03:05:12 pm ---Repeat the experiment ?

When measuring things use a measuring apparatus with a lower uncertainty.

--- End quote ---

Thank you for that :) the lower uncertainty is a good point!
any others?

Deadly_king:

--- Quote from: $!$RatJumper$!$ on October 24, 2010, 02:27:14 pm ---Guys we all know how frustrating those errors and improvements can be on the last page of a physics prac lol
Have you guys got any tips or certain things to remember when writing down these errors and improvements? I've looked at a lot of past paper questions and there seems to be a variety of different things in each practical that you can write, but the thing is, i would have never thought about some of those in an exam. So if you have anything that would help please share!

Thankx :)

--- End quote ---

It usually depends on the experiment being carried out. But in most cases these two applies :

Error : Two sets of values are not enough to draw a valid conclusion
Improvement : Repeat experiment and take maximum number of measurements so as to be able to plot a graph. This is a means of averaging.

Error : It is difficult to judge the measurement since it is instantaneous. hence we should be estimating which is not very accurate.
Improvement : Record the experiment with a camera and use slow motion playback to record measurements as accurately as possible.

Hope it helps ;)

$!$RatJumper$!$:

--- Quote from: Deadly_king on October 24, 2010, 03:35:20 pm ---It usually depends on the experiment being carried out. But in most cases these two applies :

Error : Two sets of values are not enough to draw a valid conclusion
Improvement : Repeat experiment and take maximum number of measurements so as to be able to plot a graph. This is a means of averaging.

Error : It is difficult to judge the measurement since it is instantaneous. hence we should be estimating which is not very accurate.
Improvement : Record the experiment with a camera and use slow motion playback to record measurements as accurately as possible.

Hope it helps ;)

--- End quote ---

Thank you :)

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