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Current timeTotal duration Video transcript - We've been talking about the Bohr model for the hydrogen atom, and we know the hydrogen atom has one positive charge in the nucleus, so here's our positively charged nucleus of the hydrogen atom and a negatively charged electron. If you're going by the Bohr model, the negatively charged electron is orbiting the nucleus at a certain distance. So, here I put the negatively charged electron a distance of r1, and so this electron is in the lowest energy level, the ground state.

This is the first energy level, e1. We saw in the previous video that if you apply the right amount of energy, you can promote that electron. The electron can jump up to a higher energy level. If we add the right amount of energy, this electron can jump up to a higher energy level. So now this electron is a distance of r3, so we're talking about the third energy level here. This is the process of absorption. The electron absorbs energy and jumps up to a higher energy level. This is only temporary though, the electron is not going to stay there forever.

It's eventually going to fall back down to the ground state.

Arithmetic and Algebra Again 2e Leaving Math Anxiety Behind Forever by Brita Immergut Download

Let's go ahead and put that on the diagram on the right. Here's our electron, it's at the third energy level. It's eventually going to fall back down to the ground state, the first energy level. Here's the electron going back to the first energy level here. When it does that, it's going to emit a photon.

It's going to emit light. When the electron drops from a higher energy level to a lower energy level, it emits light. This is the process of emission. I could represent that photon here. This is how you usually see it in textbooks. We emit a photon, which is going to have a certain wavelength. Lambda is the symbol for wavelength. We need to figure out how to relate lambda to those different energy levels.

The energy of the photon is, the energy of the emitted photon is equal to the difference in energy between those two energy levels. We have energy with the third energy level and the first energy level. The difference between those So, the energy of the third energy level minus the energy of the first energy level. That's equal to the energy of the photon.

This is equal to the energy of that photon here.


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We know the energy of a photon is equal to h nu. Let me go ahead and write that over here. Energy of a photon is equal to h nu. H is Planck's constant, this is Planck's constant. Nu is the frequency.

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Arithmetic and Algebra Again, 2/e : Leaving Math Anxiety Behind Forever - McGraw-Hill eBooks Store

New Releases. Categories: Mathematical Foundations Algebra. Description The bestselling guide updated and expanded for today's mathphobesWritten by two pioneers of the concept of math anxiety and how to overcome it, Arithmetic and Algebra Again has helped tens of thousands of people conquer their irrational fear of math. Features the latest techniques for breaking through common anxieties about numbers. Arithmetic and Algebra Again also takes a real-world approach that lets mathphobes learn the math they need as they need it.

Conquering Math Anxiety - The Power of Yay Math: Robert Ahdoot at TEDxAJU

Back cover copy Conquer your math anxiety forever! Are you a mathphobe? Do formulas, calculations, and algorithms leave you in a cold sweat? Do you freeze when you see equations marching across a page? This second edition of the bestselling, easy-to-use guide can banish your fear of mathematics and algebra forever. Written by teachers with years of experience teaching the math-anxious, Arithmetic and Algebra Again gives you specific, one-step-at-a-time support in calming your anxiety, learning about numbers, and solving problems.

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Absorption and emission

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