What is noted by +_5 in measuring cylinder?

AI Thread Summary
The discussion centers around the concept of error in instruments, with participants questioning why errors are noted and whether it is possible to create an instrument free of error. It is emphasized that achieving absolute accuracy is impossible, as all practical instruments, including graduated vertical number lines, have inherent limitations that contribute to measurement errors. The consensus is that while striving for precision is essential, some degree of error is unavoidable in any measurement tool.
abi.ayan
Messages
37
Reaction score
0
can anyone explain why is that noted?Most of them says that it denotes the error.why there should be an error in the instrument.Can't we make an instrument free of error?confused.
 
Chemistry news on Phys.org
abi.ayan said:
Can't we make an instrument free of error?

No..
 
abi.ayan said:
can anyone explain why is that noted?Most of them says that it denotes the error.why there should be an error in the instrument.Can't we make an instrument free of error?confused.

How accurately can the practical, graduated, vertical number line be read? Free of Error is impossible.
 

Thread 'Solubility of MgSO47H2O in water'

It seems like a simple enough question: what is the solubility of epsom salt in water at 20°C? A graph or table showing how it varies with temperature would be a bonus. But upon searching the internet I have been unable to determine this with confidence. Wikipedia gives the value of 113g/100ml. But other sources disagree and I can't find a definitive source for the information. I even asked chatgpt but it couldn't be sure either. I thought, naively, that this would be easy to look up without...
View full post »

Thread 'Why does having 8 valence electrons make an element inert?'

I was introduced to the Octet Rule recently and make me wonder, why does 8 valence electrons or a full p orbital always make an element inert? What is so special with a full p orbital? Like take Calcium for an example, its outer orbital is filled but its only the s orbital thats filled so its still reactive not so much as the Alkaline metals but still pretty reactive. Can someone explain it to me? Thanks!!
View full post »

Similar threads

Measurement technology textbook problems
Replies
1
Views
549
Measurement technology textbook problems
Replies
2
Views
429
I Uncertainties accumulate when measuring longer lengths?
Replies
7
Views
1K
What is zero error of a measuring instrument ?
Replies
1
Views
3K
I What is the correct definition of measurement uncertainty?
Replies
21
Views
3K
What is the Correct Method for Measuring CO2 Gas Volume?
Replies
12
Views
4K
A Definitions of Cylinder Sets and Cylinder Set Measure
Replies
2
Views
4K
A cylinder of snow rolls down a hill gathering more snow -- calculate its speed
Replies
39
Views
3K
Time to empty gas cylinder (problem worked, but would like feedback)
Replies
7
Views
3K
Atwood's with a cylinder - Rotational Motion
Replies
13
Views
865

Hot Threads

Recent Insights

Back
Top