Meselson and Stahl Experiment

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[@RadenRocks1]

man! can you make a video on how to do that thing you were doing with the marker in the beginning?

[@moniquegao6273]

I never comment on videos, but this is an absolute GODSEND. I am a college biology student and I never really knew what this experiment meant until just now, sadly enough. You make it easy to understand. You've saved me in biochem and now bio. Thank you thank you!

[@rogerparker3422]

This is a good lecture but please note that nitrogen-15 is not radioactive - it is a stable isotope of nitrogen.

[@alexeynava3086]

Hey Andrei , I just want to say Thank you because I've been watching your lectures for such a long time and they have been life savers for my studies. You have such a great talent for teaching any topic with an outstanding confidence and fluency that it amazes me every single time I watch your videos. Also, I wanted to point something out , around the

[@jollyjokress3852]

This presentation is as clear as a black night sky over the Arctic wilderness.

[@gemmaday3213]

Thank you so much for this video! I never thought I'd get my head around this but your clear explanation has helped massively - I now understand! Thanks for sharing.

[@katiakyriakoulis463]

Gotta love Meselson and Stahl! Best lectures-go you!

[@Lovelypanacea]

Thank you for delivering appropriate detail so efficiently!!! Words cannot adequately express my gratitude for your lectures. You have a true gift organizing information and relaying it to those seeking material mastery.

[@adebowalealade4648]

Hey Andrey! I have been following your videos from undergrad. Now I am in grad school, yet here I am. 😉 However, it's so bad that ever since I have not taken a moment to thank you. Hence, I would love to say THANK YOU for your videos! You explain complex concepts in the most understandable form. THANK YOU once again!👍

[@yasminagomez3860]

Really helpful and clear explanation! Thank you so much ! I finally understand this. :)

[@shrutishah1102]

I got a little distracted by the marker trick :P But I love your lectures: the pace at which you teach, the detailed explanation, and the way you already write things down before the video and then narrate it in your own words! lots of love and gratitude!

[@anice_sab873]

Your lectures are easy to follow and are amazing!

[@bertarissen6568]

N-15, a very interesting rare (heavy, non radioactive) isotope of nitrogen with an unbelievable small thermal neutron capture cross section of 0,024 millibarn. Used in nitrogen-15 NMR because of the fractioned nuclear spin of 1/2.

[@adriana9a]

I just wanted you to know that your videos are still so relevant and are saving me in this semester's biochemistry course

[@Longlivw]

Thank you, this explanation was so clear I now understand!

[@omarhasannin2300]

Well explained. Thank you!

[@karolinazgodzinska5884]

love it! thank you so much!

[@Pharm213]

This man is carrying me through my MCAT studies. Thanks mate!! Wish me luck this upcoming application cycle

[@hassy200]

Awesome video man, I appreciate it.

[@alinadingle4245]

this was so helpful thank you!!