A Lab Skills Tutorial for the manual polarimeter machine used in University of Toronto Scarborough chemistry labs. Produced, directed, camera and post production by Mark McKee. 2017
For the decimal number, is it whichever WHOLE number on the inner scale matches up with a number on the outer? Because it looks like 0.5 on the inner also matches with an outer number.
to make a solution you need to disolve first the compound in water and then fill the volumetric flask to the line. all the procedure is well explaind, except the most important thing - how do you read the scale. i don t know where do you get 1.1, as for the 176.5... it s complete mistery.
She used the 176.5 to explain how to measure and calculate the negative specific rotation, 176.5-180=3.5. The 1.1 measurement is independent of the second measurement; I understand the confusion.
Look at 6:37. We see the the zero from the inner scale lines between 176 and 177 from the outer scale, so the whole number is 176 (Always write the smaller number when the inner zero isn't align with the outer line exactly) For the decimal, we see that the 5 in the inner scale lines up directly to a line on the outer scale, so the decimal point is 5. That's where she got 176.5 initially.
Hello, can you get some readings from this experiment (the first and second angle) (the length of the tube used) (and the concentration of the solution)
To find the whole number: -Look for which number from the outer scale *lines up with the zero from the inner scale.* (Always pick the *smaller number* if the inner scale line is *between two outer scale lines.*) To find the decimal point: -it is whichever the *inner scale number lines up directly to any outer scale number.*
that was amazingly explained
For the decimal number, is it whichever WHOLE number on the inner scale matches up with a number on the outer? Because it looks like 0.5 on the inner also matches with an outer number.
Good teaching
m also a teacher and traineer
hence being a teacher i appreciate you
to make a solution you need to disolve first the compound in water and then fill the volumetric flask to the line.
all the procedure is well explaind, except the most important thing - how do you read the scale.
i don t know where do you get 1.1, as for the 176.5... it s complete mistery.
did you try not being an idiot?
She used the 176.5 to explain how to measure and calculate the negative specific rotation, 176.5-180=3.5. The 1.1 measurement is independent of the second measurement; I understand the confusion.
What a great video!
From where u have got 176.5 u did not mention
Look at 6:37.
We see the the zero from the inner scale lines between 176 and 177 from the outer scale, so the whole number is 176 (Always write the smaller number when the inner zero isn't align with the outer line exactly)
For the decimal, we see that the 5 in the inner scale lines up directly to a line on the outer scale, so the decimal point is 5.
That's where she got 176.5 initially.
best video on this topic in youtube
*best video on polarimetry*
Where does 176.5 degrees come from?
Hello, can you get some readings from this experiment (the first and second angle) (the length of the tube used) (and the concentration of the solution)
Best video ever omg ily so much
Outstanding ✔️
thanks for sharing polarimeter info
Outstanding❤ thnku so muxh😇
Thank you ❤️❤️❤️
Thank you
Awesome
THX
🇨🇦🍁
You have more patience than ms dhoni
LA 4ACH DELL'INDUSTRIALE DI TERMOLI SPACCA
How 1.1
To find the whole number:
-Look for which number from the outer scale *lines up with the zero from the inner scale.* (Always pick the *smaller number* if the inner scale line is *between two outer scale lines.*)
To find the decimal point:
-it is whichever the *inner scale number lines up directly to any outer scale number.*