Great explanation, Wonderful teaching, I've learned SEM basics from here a very good starting point for me. Thank you Dr. Tonya. Great teaching.

Very nice and not dumbed down. You explain stuff well. Thank you!!!

Good introduction. Really helpful.

Thank you so much, your explanation is really good and helpful!

Very well explained. Useful information, thank you so much !!

Nicely explained Basic of SEM! Nice Teaching.

really good video and amazing explanation!!

THANK YOU MA'AM FOR EXPLAINING THIS TOPIC IN A SIMPLE MANNER

Clear explanation, thank you.

Great video, thank you so much!!

Very good explanation. Thank you.

Thank you so much! that's very helpful.

Greatest tutorial intro ever

Thank you very much! Exactly what I need :)

Thank you mam.... It's very helpful....

Amazing lecture, thank you

Amazing lecture

How cool is it that somehow the magnetic lenses can focus those electrons in a beam to a small spot, even though they repel each other even inside the beam! I imagine the electrons must move fast enough (high enough momentum, and kinetic energy along with it) to counteract Coulomb repulsion

nice explanation, thank you :)

love u girl, great explanation

She's the real deal.

What led me to this channel was a question I had, the s.e.m. was invented in 1965, my question was, who invented it, what company funded the work and, what years where the advances in this tech made and what company or other, funded those advancements?

thanks a lot kilani

Thanx a lot ma'am. Really really helpful and lucid. Can we get the copy of ppt as well ma'am? Since some images were nt much clear in labelling.

really helpful

nicely explained

please tell how to do sem and tem on gfrp composite material detailed analysis.thanks in advance.

thank you.

thank you so much Madam

Thank you

Is there a link to the slides?

☺thank you

Mam your explanation is nice, but could you please reduce the size of face screen little bit less, because some part of the ppt slides covered with ur face screen,, tHANK YOU SO MUCH FOR THE GOOD EXPLANATION... @Tonya

Which book is it that you mentioned? For SEM read.

thank you so much, please can u send us the ppt file

nice lecture please i want the linc of slides of this seminar or video

What kinda differences would be there if I go for SEM testing of (1) cement paste i.e., cement plus water (2) mortar i.e., cement + water + sand, and (3) concrete i.e., cement + water + sand + gravels? Also let me know which case would be more appropriate in order to discuss the phase characterization of the products formed therein such as the main hydration products e., CSH (calcium silicate hydrate) and CH (calcium hydroxide). One more thing.....how can I assess the structures of either of these two hydration products in which case, I have to first dehydrate my samples prior to going for SEM testing (during the sample preparation stage)? So if dehydrated, there would be neither CSH nor CH in the prepared samples for SEM.

Could you provide us the slides?

#Tonya Coffey

Wow...

What is the book that is referred to?

Vacuum might not be so good for the pen if you put it in there :p Get a really amazing image of ink splattered all over your beautiful instrument

Fantastic explanation, but you go a bit fast to follow