You CAN melt glass in a microwave (microwaves explained) - Filmed from the inside #3

Foreigner I discovered how to film inside a

microwave

. This is the third video in that series and

melt

ed

glass

generally does not

melt

in a

microwave

. You can use it as a receptacle to heat your drink. It is considered microwave safe, but not. It's possible, if you really want to, all you have to do is heat the

glass

first. I'm using a blowtorch. I will heat a large area first and then concentrate on one spot, that's just to avoid thermal shock. What you saw at the beginning. from the video it was sped up here it is in real time this experiment is a good illustration of why it is not always easy to defrost something in a microwave to see why I think about the way a microwave works you probably know that a microwave is good for heating water for water to be H2O, it's oxygen and two hydrogens like this model I have here, so there's the oxygen, there's the hydrogens, this is a covalent bond, so here some electrons are shared and the oxygen attracts the shared ones.

Electrons are stronger than hydrogens, which means that the oxygen ends up with a bit of a negative charge and the hydrogens end up with a bit of a positive charge, so this is a polar molecule. It is called polar because it has charges at different ends. So what? It happens when you put a water molecule in an electric field, well an electric field is just a way of showing an area of ​​influence around a charged particle, so if I have a proton here, for example, that is positively charged and I have another proton here, this proton is going to feel a force from this, a repulsive force because like charges repel each other, so I can draw field lines around this proton that show its influence on this charged particle here and by convention, you draw lines of field in the direction in which a positive charge would feel a force, so if we set up an electric field around this water molecule, we don't need to worry about what generates the field like we would, you know, some positively charged particles. down here and some negatively charged particles up here. and then we have field lines pointing up, well if the field points up then the positive charge end will be drawn up and the negative charge end will be drawn down so the molecule will reorient itself like this , so if I then change the direction of the electric field so that it points downward, then the molecule will reorient itself again so that the positive end points down and the negative end points up.

Microwaves are electromagnetic waves, meaning their oscillations in electric and magnetic fields, when a microwave passes over a molecule. of water, the water molecule is in an oscillating electric field, so it's constantly reorienting itself this way, it's gaining kinetic energy and that's what heat is heat is just atoms and molecules with kinetic energy, so That microwave ovens work with substances that are polar like water. Why can't you heat oil very easily in a microwave? Oil molecules are not very polar. So what happens when you have ice? With ice you have water molecules trapped in a crystal lattice structure where they can't. move, so if I put frozen water in an electric field, the oxygen will want to move up and the hydrogens will want to move down, but they can't because they are locked in place by the lattice and what that means for a microwave is that when

microwaves

go over frozen water, when they go over ice, the molecules won't move, they won't absorb energy, they won't absorb those

microwaves

, so how can you defrost something well when you take food out of the freezer? like this carrot, for example, will start to thaw on its own because it's now at room temperature, it will thaw from the outside in and by chance some spot on the outside of the carrot thaws before any other part. and then you have a small portion of liquid water from that moment on, all the microwaves are absorbed by that small portion of liquid water and you can see that it boils very, very quickly even though the other end of the carrot is completely frozen, so what?

What's left is a carrot that's boiling at one end and frozen at the other. That's why instructions for a microwave meal usually tell you to stir the ingredients halfway through to redistribute the heat that's actually built up in just a minute. At some points the same logic applies to glass. Glass is primarily silicon dioxide, which is not a polar molecule because silicon dioxide doesn't form molecules, it forms a sort of covalent network, but the oxygen bonds in silicon are polar, but just like with ice, those atoms They are locked in position, it's not a crystal lattice like ice, it's an amorphous solid, but the rules still apply, those atoms can't move when microwaves pass over them when you have that alternating electric field, but if you heat the glass long enough, those atoms start to get a little bit of movement and they can start to absorb those microwaves and eventually start to melt mm-hmm, that's how glass melts in a microwave.

I would like to thank Audible for sponsoring this video since I started audiobooks. I talked to a lot of people who make audiobooks and someone said to me, "You've listened to Harry Potter, of course," and I said no, because I mean, I read Harry Potter, when the books came out, so why would I listen to it? ? the thing when I read it or when I already read it and he said to me: you know, Stephen Fry read it and it's incredible and it's incredible, it's like the perfect combination of Harry Potter and Stephen Fry, so I'm enjoying all of those books.

Once again, I went to book four. They are really good. If you want to enjoy Harry Potter read by Stephen Fry for free or any book in the audible range, they have the best range. You can register for free for 30 days. try go to audible.com forward slash Steve mold or click the link in the description if you do that really helps me because they know I sent it. I hope you enjoyed this video, if you did, don't forget to subscribe and See you next time