About This Chapter
Overview of Modern Physics - Chapter Summary
For a comprehensive overview of modern physics, take a look at this collection of short and engaging lessons. As you work through the chapter, you'll break down fundamental topics related to the study of modern physics, such as Plank's constant, the photoelectric effect, ionization energy, quantization and much more. You'll also examine the atomic spectrum and evaluate the practical uses of x-rays. Studying this chapter can help you:
- Summarize the history of the photoelectric effect
- Outline the wave-particle duality concept
- Explain quantization's application in the study of physics
- Describe Plank's constant, the Bohr model and the nature of light
- Understand ionization energy and atomic energy levels
- Define Fraunhofer lines, fluorescence and phosphorescence
- Assess the common uses of x-rays
- Evaluate the atomic and continuous spectra
This self-paced and mobile friendly chapter comes with lesson quizzes and a chapter exam to help you retain the information you study. Our instructors are available to answer your questions, and you can print word-for-word lesson transcripts to study offline. The chapter can be accessed on any Internet-connected device, which enables you to study wherever it's convenient.
1. The Photoelectric Effect: Definition, History, Application & Equation
In this lesson, you will learn what the photoelectric effect is, how it was discovered, how it applies to everyday life, and the equation associated with it. A short quiz will follow.
2. The Wave Nature of Matter
After watching this video, you will be able to explain the concept of wave-particle duality, give an example of an application of wave-particle duality, and complete simple calculations using the de-Broglie wavelength equation. A short quiz will follow.
3. What is Quantization of Energy? - Definition & Formula
What is quantization with respect to physics? This lesson will include both a qualitative and a quantitative discussion of the quantization of light, including an example of how to find the energy of an X-ray photon.
4. Planck's Constant: Formula & Application
After watching this lesson, you will be able to explain what Planck's constant is and use the Planck-Einstein relation to calculate the energy in a photon of light. A short quiz will follow.
5. The Bohr Model and Atomic Spectra
Do you ever wonder where light comes from or how it is produced? In this lesson, we are going to use our knowledge of the electron configurations and quantum numbers to see what goes on during the creation of light.
6. Ionization Energy: Trends Among Groups and Periods of the Periodic Table
Do you know someone who has undergone radiation as a form of cancer treatment? Have you ever thought about why X-rays have health risks? Watch the video to find out what these types of radiation are really doing to atoms, define ionization energy and identify ionization trends on the periodic table.
7. What is an Energy Level of an Atom? - Definition & Equation
In this lesson, you will learn about the possible energy states that an electron can have in an atom. You will also understand how these energy levels give rise to the light emission spectra of individual atoms.
8. The Nature of Light: Origin, Spectrum & Color Frequency
This lesson introduces the basics of visible light and color. Learn how the visible light spectrum is divided into the six color ranges. We'll also discuss why different people name colors in different ways.
9. Fluorescence & Phosphorescence: Definitions & Measurement
Fluorescence and phosphorescence are types of light emitted due to excited electrons. In this lesson we will learn what this means and how it is measured.
10. What Are X-rays? - Definition & Uses
This lesson describes X-rays and their many uses, from looking at broken bones to analyzing the rocks on Mars. Learn how X-rays are part of the larger electromagnetic spectrum, which ranges from radio waves to powerful gamma rays.
11. Atomic Spectrum: Definition, Absorption & Emission
In this lesson, we'll discuss the meaning of the term 'atomic spectrum' and distinguish between the two main types of atomic spectra: absorption and emission spectra. We'll also describe how each forms.
12. Continuous Spectrum: Definition & Overview
If you've seen a rainbow, you may have seen a continuous spectrum - or something close to it. In this lesson, you'll learn about continuous spectra in the context of the electromagnetic spectrum and light. You'll also learn about two types of spectra that aren't continuous: absorption spectra and emission spectra.
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Other chapters within the UPSEE Paper 1: Study Guide & Test Prep course
- Basics of Scientific Units & Measurement
- Understanding the Laws of Motion
- Energy, Work & Power in Physics
- Fundamentals of Linear Momentum
- Understanding Rotation of a Rigid Body
- Gravitation in Physics
- Understanding Oscillatory Motion
- Mechanics of Solids & Fluids
- Properties of Heat & Thermodynamics
- Overview of Waves
- Understanding Electrostatics
- Overview of Current Electricity
- Magnetic Effect of Current
- Magnetism in Matter
- Electromagnetic Induction Overview
- Ray Optics & Optical Instruments
- Understanding Wave Optics
- Overview of Nuclear Physics
- Electronics, Transistors & Signals
- Atomic Structure & Configuration
- Properties of Chemical Bonds
- Redox Reactions Overview
- Chemical Equilibrium & Kinetics
- Electrochemistry & Catalysts
- Colloids in Chemistry
- Colligative Properties of Solution
- Periodic Table & Electronic Configuration
- Overview of Thermochemistry
- Reactions & Compounds in Organic Chemistry
- Understanding Isomerism
- Overview of Organic Compounds
- Properties of Solids in Chemistry
- Overview of Algebra Basics
- Matrices in Algebra
- Probability in Math
- Understanding Trigonometry
- Overview of Coordinate Geometry
- Principles of Calculus
- Vectors in Algebra
- Mechanics Overview
- UPSEE Paper 1 Flashcards