Sound Waves

The Sound is a Mechanical Wave Video Tutorial describes the nature of sound as a mechanical wave. The meaning of such a statement and its contrast with being an electromagnetic wave is thoroughly discussed. Numerous examples, illustrations, and animations assist in the explanations.

Many students are troubled by the idea of sound being a wave when there are no crests and troughs. In this Sound as a Pressure Wave Video Tutorial, Mr. H clears up the confusion with a short presentation on why sound can be thought of as a pressure wave. Numerous examples, illustrations, and animations assist in the explanations.

The Properties of Sound Waves Video Tutorial describes the various properties of sound and relates such properties to waves and to our perceptions of sound. Numerous examples, illustrations, and animations assist in the explanations.

The Intensity and deciBels Video Tutorial explains what sound intensity is and how it is dependent upon distance from the source. The concept and mathematics of deciBels are presented with several examples to illustrate how the deciBel scale works. Numerous examples, illustrations, and animations assist in the explanations.

The DeciBel and Intensity Calculations Video Tutorial explains the equations for calculating intensity and deciBel values and demonstrates their use with five example problems. Numerous examples, illustrations, and animations assist in the explanations.

The Interference and Beats Video Tutorial explains how sound waves can interfere, how they can produce standing waves in 1D and 2D, their role in music, and how beats are formed. Numerous examples, illustrations, and animations assist in the explanations.

The Doppler Effect Video Tutorial discusses the conceptual and mathematical nature of the Doppler effect. Four example problems, instructive diagrams, and animations assist in the explanations.

The Resonance Video Tutorial explains what resonance is and why it occurs. The explanations are accompanied by multiple examples and demonstrations.

The Harmonic Frequencies and Standing Waves Video Tutorial uses numerous examples and diagrams to explain what harmonics are and how they can be associated with standing wave patterns. The mathematical patterns are also discussed.

The Mathematics of Standing Waves Video Tutorial discusses the mathematic formulas associated with standing waves and an effective strategy to solving such problems. The use of the formulas and the strategy are then modeled to solve six example problems.

The Resonance in Open End Air Columns Video Tutorial explains what an open-end air column is and how it resonates to form a standing wave pattern. The mathematical relationships between column length and wavelength and between wavelengths and frequencies of the various harmonics are discussed. Numerous examples, illustrations, and animations assist in the explanations.

The Open-End Air Column Problems Video Tutorial demonstrates how to approach Physics word problems involving open-end air columns. Mathematical formulas and relationships are reviewed and an effective problem-solving framework is presented. Then Mr. H proceeds to demonstrate the use of the formulas and framework using five examples.

The Closed-End Air Columns Video Tutorial explains what a closed-end air column is and how it resonates to form a standing wave pattern. The mathematical relationships between column length and wavelength and between wavelengths and frequencies of the various harmonics are discussed. Numerous examples, illustrations, and animations assist in the explanations.

The Closed-End Air Column Problems Video Tutorial demonstrates how to approach Physics word problems involving closed-end air columns. Mathematical formulas and relationships are reviewed and an effective problem-solving framework is presented. Then Mr. H proceeds to demonstrate the use of the formulas and framework using five examples.