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Fraser: Astronomy Cast Episode 164 for Monday November 16, 2009, Inside the Atom. Welcome to Astronomy Cast, our weekly facts-based journey through the cosmos, where we help you understand not only what we know, but how we know what we know. My name is Fraser Cain, I’m the publisher of Universe Today, and with me is Dr. Pamela Gay, a professor at Southern Illinois University Edwardsville.
Pamela: Hey, Fraser, how’s it going? Fraser: It’s going very well. Very wet but that’s the west coast in the winter.
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Pamela: Yeah, we’re having the same thing here. Our wet is just a lot less wet than your wet.
Fraser: Yeah, oh, it’s crushing, it’s so wet anyway, but, you know it woud be nice to have a little bit of sun. I think my vitamin D level is low. So, we’ve talked about the biggest of the big, and now let’s focus in on the smallest of the small. Let’s see what’s inside that most basic building block of matter, the atom. Now, you probably know the basics, but with ever more powerful particle accelerators, physicists are revealing particles within particles, announcing new discoveries all the time.
Alright, Pamela, so let’s come up with the simple, simple structure of the atom for starters and how we learned that. So, I think most of us know that atoms are the smallest particles that were first discovered that made up all of matter. We’re all made of atoms; molecules are made up of atoms. So what is the beginning structure of an atom? Pamela: Well, initially we had it wrong.
But sometimes it helps to start with what we did wrong to understand how we actually understand it today. So it all started with Rutherford, who came up with this idea for the model that said ok, we have an atom; it’s made of a medley of electrons, of protons, of neutrons we didn’t know all of those bits yet, but all this stuff is thrown in together. This was called the plum pudding model.
Thompson, who was the discoverer of the electron in 1897, he decided he was going to test this plum pudding model. The idea was you take a very thin piece of gold sheet, and you fire electrons at it. If you get a plum pudding model, if you have this even smattering of everything put together, then you have all throughout it random scattering events. The electron flies in, it hits a proton, it flies off. It goes in, it hits a another electron, it flies off.
Fraser: Or it goes through and doesn’t hit anything. Pamela: Or it goes through and doesn’t hit anything. But because you have this random mashing of everything together, the probability that it’s actually going to hit something is pretty high. It’s sort of like if you take 15 of your friends, and you tell them scatter yourselves about the driveway, and then you launch yourself on rollerskates down the driveway, you’re probably going to nail one of your friends.
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And they’re going to arrest you for crashing into the driveway. Now, the reality is, he started firing away at the gold foil, and most of the electrons went straight on through.
And this was kind of confusing because he had the wrong model. In reality, atoms have most of their mass—all of the neutrons, all of the protons—crammed down in the center. This is more of the case where you get your friends, you pile them in the driveway, and you tell them to get as close together as they possibly can to stand in a really tight-knit huddle. Now in this case when you fire yourself down the driveway on your roller skates, you’re probably going to miss them and keep going and crash into whatever’s beyond your driveway.
Well in this case when he fired, most of the stuff passed straight on through. But when he did occasionally make a solid connection, he got big scattering events and angles that indicated most of the mass was down in the center and most of the reactions were down in the center. It was a really neat experiment that forced him and everyone else to change how we looked at the atom. Fraser: Right as I recall it was an incredibly thin sheet of gold foil and you could imagine this constant beam of electrons firing out of this gun and them almost all going through, and then every now and then they were scattering back out, hitting detectors around the room. Pamela: And it was Rutherford who interpreted this 1909 experiment to come up with our modern understanding of the atom. It’s just amazing to me to think that it was only 100 years ago, now that we’re recording this in 2009, it was only 100 years ago that we finally figured out what the model of the atom actually should look like.
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Fraser: Astronomy Cast Episode 164 for Monday November 16, 2009, Inside the Atom. Welcome to Astronomy Cast, our weekly facts-based journey through the cosmos, where we help you understand not only what we know, but how we know what we know. My name is Fraser Cain, I’m the publisher of Universe Today, and with me is Dr. Pamela Gay, a professor at Southern Illinois University Edwardsville.
Pamela: Hey, Fraser, how’s it going? Fraser: It’s going very well. Very wet but that’s the west coast in the winter.
STATE OF DECAY 2 Gameplay Trailer (E3 2017) Xbox One X Follow me on Twitter - SUBSCRIBE - Subscribe to MKIceAndFire to get all the new game trailer.
Pamela: Yeah, we’re having the same thing here. Our wet is just a lot less wet than your wet.
Fraser: Yeah, oh, it’s crushing, it’s so wet anyway, but, you know it woud be nice to have a little bit of sun. I think my vitamin D level is low. So, we’ve talked about the biggest of the big, and now let’s focus in on the smallest of the small. Let’s see what’s inside that most basic building block of matter, the atom. Now, you probably know the basics, but with ever more powerful particle accelerators, physicists are revealing particles within particles, announcing new discoveries all the time.
Alright, Pamela, so let’s come up with the simple, simple structure of the atom for starters and how we learned that. So, I think most of us know that atoms are the smallest particles that were first discovered that made up all of matter. We’re all made of atoms; molecules are made up of atoms. So what is the beginning structure of an atom? Pamela: Well, initially we had it wrong.
But sometimes it helps to start with what we did wrong to understand how we actually understand it today. So it all started with Rutherford, who came up with this idea for the model that said ok, we have an atom; it’s made of a medley of electrons, of protons, of neutrons we didn’t know all of those bits yet, but all this stuff is thrown in together. This was called the plum pudding model.
Thompson, who was the discoverer of the electron in 1897, he decided he was going to test this plum pudding model. The idea was you take a very thin piece of gold sheet, and you fire electrons at it. If you get a plum pudding model, if you have this even smattering of everything put together, then you have all throughout it random scattering events. The electron flies in, it hits a proton, it flies off. It goes in, it hits a another electron, it flies off.
Fraser: Or it goes through and doesn’t hit anything. Pamela: Or it goes through and doesn’t hit anything. But because you have this random mashing of everything together, the probability that it’s actually going to hit something is pretty high. It’s sort of like if you take 15 of your friends, and you tell them scatter yourselves about the driveway, and then you launch yourself on rollerskates down the driveway, you’re probably going to nail one of your friends.
The ASUS My Cinema-U3100MiniPlus adopts a highly integrated single chip that improves terrestrial DTV reception and protects against adjacent channel interference. With its miniature design, you can even take it along with you while traveling, and it has also a built-in IR receiver that enables easy channel surfing. All-in-One PCs. Intelligent Robot. With ASUS My Cinema-U3100Mini, you can easily turn your PC or notebook into an all-around entertainment center. PCB color and bundled software versions are subject to change without notice. Asus my cinema u3100 mini plus software.
And they’re going to arrest you for crashing into the driveway. Now, the reality is, he started firing away at the gold foil, and most of the electrons went straight on through.
And this was kind of confusing because he had the wrong model. In reality, atoms have most of their mass—all of the neutrons, all of the protons—crammed down in the center. This is more of the case where you get your friends, you pile them in the driveway, and you tell them to get as close together as they possibly can to stand in a really tight-knit huddle. Now in this case when you fire yourself down the driveway on your roller skates, you’re probably going to miss them and keep going and crash into whatever’s beyond your driveway.
Well in this case when he fired, most of the stuff passed straight on through. But when he did occasionally make a solid connection, he got big scattering events and angles that indicated most of the mass was down in the center and most of the reactions were down in the center. It was a really neat experiment that forced him and everyone else to change how we looked at the atom. Fraser: Right as I recall it was an incredibly thin sheet of gold foil and you could imagine this constant beam of electrons firing out of this gun and them almost all going through, and then every now and then they were scattering back out, hitting detectors around the room. Pamela: And it was Rutherford who interpreted this 1909 experiment to come up with our modern understanding of the atom. It’s just amazing to me to think that it was only 100 years ago, now that we’re recording this in 2009, it was only 100 years ago that we finally figured out what the model of the atom actually should look like.
...'>Crack 3dm State Of Decay Wiki(02.02.2019)Fraser: Astronomy Cast Episode 164 for Monday November 16, 2009, Inside the Atom. Welcome to Astronomy Cast, our weekly facts-based journey through the cosmos, where we help you understand not only what we know, but how we know what we know. My name is Fraser Cain, I’m the publisher of Universe Today, and with me is Dr. Pamela Gay, a professor at Southern Illinois University Edwardsville.
Pamela: Hey, Fraser, how’s it going? Fraser: It’s going very well. Very wet but that’s the west coast in the winter.
STATE OF DECAY 2 Gameplay Trailer (E3 2017) Xbox One X Follow me on Twitter - SUBSCRIBE - Subscribe to MKIceAndFire to get all the new game trailer.
Pamela: Yeah, we’re having the same thing here. Our wet is just a lot less wet than your wet.
Fraser: Yeah, oh, it’s crushing, it’s so wet anyway, but, you know it woud be nice to have a little bit of sun. I think my vitamin D level is low. So, we’ve talked about the biggest of the big, and now let’s focus in on the smallest of the small. Let’s see what’s inside that most basic building block of matter, the atom. Now, you probably know the basics, but with ever more powerful particle accelerators, physicists are revealing particles within particles, announcing new discoveries all the time.
Alright, Pamela, so let’s come up with the simple, simple structure of the atom for starters and how we learned that. So, I think most of us know that atoms are the smallest particles that were first discovered that made up all of matter. We’re all made of atoms; molecules are made up of atoms. So what is the beginning structure of an atom? Pamela: Well, initially we had it wrong.
But sometimes it helps to start with what we did wrong to understand how we actually understand it today. So it all started with Rutherford, who came up with this idea for the model that said ok, we have an atom; it’s made of a medley of electrons, of protons, of neutrons we didn’t know all of those bits yet, but all this stuff is thrown in together. This was called the plum pudding model.
Thompson, who was the discoverer of the electron in 1897, he decided he was going to test this plum pudding model. The idea was you take a very thin piece of gold sheet, and you fire electrons at it. If you get a plum pudding model, if you have this even smattering of everything put together, then you have all throughout it random scattering events. The electron flies in, it hits a proton, it flies off. It goes in, it hits a another electron, it flies off.
Fraser: Or it goes through and doesn’t hit anything. Pamela: Or it goes through and doesn’t hit anything. But because you have this random mashing of everything together, the probability that it’s actually going to hit something is pretty high. It’s sort of like if you take 15 of your friends, and you tell them scatter yourselves about the driveway, and then you launch yourself on rollerskates down the driveway, you’re probably going to nail one of your friends.
The ASUS My Cinema-U3100MiniPlus adopts a highly integrated single chip that improves terrestrial DTV reception and protects against adjacent channel interference. With its miniature design, you can even take it along with you while traveling, and it has also a built-in IR receiver that enables easy channel surfing. All-in-One PCs. Intelligent Robot. With ASUS My Cinema-U3100Mini, you can easily turn your PC or notebook into an all-around entertainment center. PCB color and bundled software versions are subject to change without notice. Asus my cinema u3100 mini plus software.
And they’re going to arrest you for crashing into the driveway. Now, the reality is, he started firing away at the gold foil, and most of the electrons went straight on through.
And this was kind of confusing because he had the wrong model. In reality, atoms have most of their mass—all of the neutrons, all of the protons—crammed down in the center. This is more of the case where you get your friends, you pile them in the driveway, and you tell them to get as close together as they possibly can to stand in a really tight-knit huddle. Now in this case when you fire yourself down the driveway on your roller skates, you’re probably going to miss them and keep going and crash into whatever’s beyond your driveway.
Well in this case when he fired, most of the stuff passed straight on through. But when he did occasionally make a solid connection, he got big scattering events and angles that indicated most of the mass was down in the center and most of the reactions were down in the center. It was a really neat experiment that forced him and everyone else to change how we looked at the atom. Fraser: Right as I recall it was an incredibly thin sheet of gold foil and you could imagine this constant beam of electrons firing out of this gun and them almost all going through, and then every now and then they were scattering back out, hitting detectors around the room. Pamela: And it was Rutherford who interpreted this 1909 experiment to come up with our modern understanding of the atom. It’s just amazing to me to think that it was only 100 years ago, now that we’re recording this in 2009, it was only 100 years ago that we finally figured out what the model of the atom actually should look like.
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