That’s a very aromatic oil to use indoors 😊. It must have a very long chain compared to other oils, but it also has additives. Know it well from oil changes and can smell it on sight.
Happy New Year, Anthony! I remember doing something very similar to this as a way to estimate Avogadro’s number, using stearic acid(?) and lycopodium powder. It may have been in a chemistry(!) class rather than physics - my memory is a bit vague as it was the 1970s.
Thanks! Yes, you remember well. Oleic acid was used (Stearic acid for doing cooling curves to show the Latent Heat of Fusion stage). What I did here was halfway to determining the Avogadro number. You typically need the mass of one mol of acid which is a bit of a circular argument! Thanks again for watching and I always enjoy the comments. Hope you will find this year's forthcoming videos interesting too! I think I have some fun ones in the pipeline!
@ Funnily enough, I clearly remember the colour of our chemistry text books - a slightly pale turquoise green. Nuffield? Anyway, I did enjoy this one for its simplicity.
@@fburton8 Yes, the Chemistry and the Nuffield Revised were green and the Physics red. Biology blue. Great courses even though Wikipedia says they were not a success! There is a game you can play where you stack up the books from different A Level eras and see the further back in time you go, the taller the stack - I am not going to risk an inference from that!
Chris, it was hypoid gear oil ep90 which I have had in my shed for ages. I think we used to use olive oil in school for the demo with lycopodium powder.
That’s a very aromatic oil to use indoors 😊. It must have a very long chain compared to other oils, but it also has additives. Know it well from oil changes and can smell it on sight.
Indeed! You probably can smell Castrol-R a mile away too!
Happy New Year, Anthony!
I remember doing something very similar to this as a way to estimate Avogadro’s number, using stearic acid(?) and lycopodium powder. It may have been in a chemistry(!) class rather than physics - my memory is a bit vague as it was the 1970s.
Thanks! Yes, you remember well. Oleic acid was used (Stearic acid for doing cooling curves to show the Latent Heat of Fusion stage). What I did here was halfway to determining the Avogadro number. You typically need the mass of one mol of acid which is a bit of a circular argument! Thanks again for watching and I always enjoy the comments. Hope you will find this year's forthcoming videos interesting too! I think I have some fun ones in the pipeline!
@ Funnily enough, I clearly remember the colour of our chemistry text books - a slightly pale turquoise green. Nuffield? Anyway, I did enjoy this one for its simplicity.
@@fburton8 Yes, the Chemistry and the Nuffield Revised were green and the Physics red. Biology blue. Great courses even though Wikipedia says they were not a success! There is a game you can play where you stack up the books from different A Level eras and see the further back in time you go, the taller the stack - I am not going to risk an inference from that!
thank you for the video!
Pleasure and thanks for watching. Not an easy one but hope you found it interesting.
what kind of oil was tested?
Chris, it was hypoid gear oil ep90 which I have had in my shed for ages. I think we used to use olive oil in school for the demo with lycopodium powder.