Thanks sir! You are really special! I want to ask a question... Doesn't the streamlined-shaped object have less resistance while moving toward the base of the tube than a spherical one? Why we concidered the speed of the longer object slower?
Thanks for the video. I have one question: I read somewhere that centripetal force is equal to centrifugal force. So how particles sediment if these both forces are equal? Thank you
Hi! I am taking biochemistry and our equation also includes "N", or Avogadro's number in the denominator. So the equation looks like this: s=M(1-vp)/Nf Why is "N" not included here? Thanks!
Hey Olivia, in another lecture I actually derive the equation you are talking about and I discuss the relationship between the equation I have in this lecture and the equation you use in your class. You can refer to that lecture :) Here is the link: www.aklectures.com/lecture/derivation-of-sedimentation-coefficient-equation
I have a question: the principles 1 and 3... aren't they the same thing? if two particles have equal size (and shape), but one of them has greater mass , this one would be also more dense. Right??? Please anyone answer
The equation is not relating 2 particles, that would call for a bit more math. The equation is relating the density of the particle and the density of the fluid. You would need to calculate s for each particle separately to determine which particle moves faster. To answer your question directly, size is not a great word to use :P. If two particles occupy equal volumes and have equal densities then their masses would be the same.
how a particle can have density, because density is no of particles / volume. there is no meaning in talking about density of single particle. please explain.
Surajcxs c.singh all substances have a density, a single particle even though it's by itself it will tend to associate with like substances with a certain density at a particular pressure and temperature. Therefore, since centrifugation doesnt affect temperature or pressure, it simply accelerates all the particles exerting force on all the particles; different particles will react according to their respective properties. Density is mass divided by volume, meaning the mass of the individual particle divided by the volume of space it occupies. You'll see at the end of centrifugation all the substances make bands in an order that is proportional to their different densities: greater densities will be seen closer to the bottom. The constituents of the mixture will order themselves in a relative manner; the more dense particle will always be lower than the particle that is less dense. It's the law of the universe to behave in this way because of physics
U are really a great teacher!! Thank you sir....your explanation is amazing... 👏 👌
I am classs 11 student from India . We have a little mention about the Scedberg unit but I wanted to know more and this surely helps
Very well explained. This guy really knows his stuff. Thanks a lot!
Jessie Loder Thanks Jessie!
First time I understood you 😅. Love the work you put into your vids! God bless 🙏.
I wonder how grinding specifically breaks cell membrane and not the membranes of inner organelles?
helps me a lot in my lecture!! Thanks!!
You have all my respect.
Good work guy
That's really awesome
Thanks sir! You are really special! I want to ask a question... Doesn't the streamlined-shaped object have less resistance while moving toward the base of the tube than a spherical one? Why we concidered the speed of the longer object slower?
your lecture is so beneficial, keep on bro
your vedios are very helpful for me......thanks a lot sir
Like the way you explained it very clearly sir,
Thanks!
Thanks for this wonderful explanation
please ,would you mind to explain for me about the 140 S particle of FMD . Please,PROF
Thanks for the video.
I have one question: I read somewhere that centripetal force is equal to centrifugal force. So how particles sediment if these both forces are equal?
Thank you
Centrifugal force is a psuedo force . Means it can't act until you take the frame of reference as the particle .
very helpful! thanks a ton.
Thanks you so much!!!!
Thank you.
thank you sir, amazing lecture
Its Great.........!!
great lecture, thank you
Thanks, it is so helpful
thanks.....sir you explained it well
Thanks!
Awesome explanation! Even after 7 years….
glad you liked it! :)
Thank you so much!
Hi! I am taking biochemistry and our equation also includes "N", or Avogadro's number in the denominator. So the equation looks like this: s=M(1-vp)/Nf Why is "N" not included here?
Thanks!
Hey Olivia, in another lecture I actually derive the equation you are talking about and I discuss the relationship between the equation I have in this lecture and the equation you use in your class. You can refer to that lecture :) Here is the link: www.aklectures.com/lecture/derivation-of-sedimentation-coefficient-equation
I have a question: the principles 1 and 3... aren't they the same thing? if two particles have equal size (and shape), but one of them has greater mass , this one would be also more dense. Right??? Please anyone answer
Superb lecture.
thank you sir
If two particles have the same size and density, they would have the same mass, right?
The equation is not relating 2 particles, that would call for a bit more math. The equation is relating the density of the particle and the density of the fluid. You would need to calculate s for each particle separately to determine which particle moves faster. To answer your question directly, size is not a great word to use :P. If two particles occupy equal volumes and have equal densities then their masses would be the same.
Density = mass/volume
For 2 particles to have the same density they'd both have to occupy the same space (size) and have the same mass so yes
great video deserve more views ;)
thanks
how a particle can have density, because density is no of particles / volume. there is no meaning in talking about density of single particle. please explain.
Surajcxs c.singh all substances have a density, a single particle even though it's by itself it will tend to associate with like substances with a certain density at a particular pressure and temperature. Therefore, since centrifugation doesnt affect temperature or pressure, it simply accelerates all the particles exerting force on all the particles; different particles will react according to their respective properties. Density is mass divided by volume, meaning the mass of the individual particle divided by the volume of space it occupies. You'll see at the end of centrifugation all the substances make bands in an order that is proportional to their different densities: greater densities will be seen closer to the bottom. The constituents of the mixture will order themselves in a relative manner; the more dense particle will always be lower than the particle that is less dense. It's the law of the universe to behave in this way because of physics
God bless you
Great..
Loveu sir
board is not clear
wow my lecture failed to explain this
👍
goat