All of AQA Measurements and their Errors - A Level Physics REVISION

In this video I go through all of AQA measurements and their errors for use as A Level Physics revision. This video is not only vitally important for preparing for Paper 3 and the practical physics skills but it also has essential information for anyone starting A Level Physics.

I recap base and derived units as well as the common prefixes. There are random and systematic errors and how to minimise these, key words like accuracy, precision, repeatable and resolution. I then go through absolute and percentage error for single and repeat readings (for both readings and measurements) as well as percentage uncertainty in gradients. There are the ways that errors and uncertainties are combined to give the final uncertainty in a reading.

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Thanks for watching,

Lewis

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Timestamps:

0:27 Subscribe on YouTube
0:32 The ultimate website! www.alevelphysicsonline.com
0:56 Base units
2:02 Derived units
3:40 Prefixes
7:46 Errors (random and systematic)
10:28 Accuracy, precision, repeatable, reproducible (spelled incorrectly in video) and resolution
12:44 Uncertainty
14:19 Readings vs. measurements
16:49 Percentage uncertainty calculations
19:37 Graphs
21:01 Error bars
22:29 Worst line of best fit
24:07 Combining uncertainties
27:10 Estimating physical quantities



Thanks for watching, I hope it was helpful - loads more videos on my website!

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Am I the only one that got so excited when I saw his calculator? I've never seen a pink colored one. Kinda weird for me but I want it. This video was useful to me, covered the chapter beautifully 💕

[nihartanna]

I am about to enter Year 12, a huge step between GCSE and A-Level and your videos are really helping me to get a head start into A-Level, keep up the good work Sir!

[silenceplzyeah]

This video has A level physics content which wasn't much focused by our teacher in school so I used to stumble on these whenever they came in paper. But this video is a rich package and I direly needed it. Thnx:)

[haarisghani]

Thank you so much for the video and timestamps, it explained the content incredibly well so far and I'm only 10 minutes in! Starting A level Physics in September, it seem like these videos will prove to be very useful!

[olliemorley]

I've got a paid subscription to your website, it amazing for specific areas of specific topics! But these overall videos are such a lifesaver!!

[marquesinif]

I'm an A level and equivalent physics tutor and this resource is incredibly useful, thank you.

[karanbaishkiyar]

This video is saving my life for my first Physics exam in class tomorrow thank you so so much!!

[TheCaptainH]

Are you going to cover all the topics in A Level Physics? If so, when will these be uploaded by?

[gabriellita]

Wow I am new to this channel and I just have to say you have amazing content.

[tumomotala]

I am from south Africa and this is helping alot for my course in uni

[edzty]

Hi please please please do the rest of the topics they’re amazing!!!!

[Sea-qvsd]

I'm looking for a video lesson for Year 12 physics during lock down, this'll do

[puglover-izmv]

i’m starting physics right now😭 and this is so helpful

[DrCook]

@Physics Online please do all of particles, it would be so good Thank you

[ksumar]

Nice video. The pen is mightier than the sword. I need to get a V5!

[Osamu_Dazaiii]

You should make a video about particle physic too!!

[gabriellac.]

Hi there, I find your videos well explained and very informative. Is there a possibility that you could make it possible so that I may be able to download your mind maps for each of your videos? For example, when making a video, you would take a picture of the mind-map and put it on your website so that we can download it. That is if you have any time. Thank you, Sir!

[carzyscenctist]

Answer this question for me, please, is a head scratcher:
1.0 cubic centimetre (cm^3) of a solution contains 0.010g of salt. What is the mass of salt contained in 1 cubic decimetre (dm^3) of the same solution?
Textbook says 10g but I disagree, my answer is 0.1g
Which answer is correct and Why???

[jaiminsheth]

Could you do a video covering the required practicals in this years advanced info and the possible types of questions you get asked on them.