What is Physics Valhalla?

A learning space for children's Mind Map sessions.

How do electromagnetic waves travel?

At the speed of light in vacuum.

Laws showing how electric and magnetic fields generate waves.

Introduced to align magnetic field behavior with electric waves.

Half epsilon not a not square in C or be not square C / 2 m note.

Maxwell's equations combine existing laws to explain how accelerating electric and magnetic fields create electromagnetic waves, showcasing the interconnected nature of these fundamental concepts in physics.
Electromagnetic waves exhibit perpendicular electric and magnetic fields, with their energy distributed equally between these fields, highlighting the balanced and intertwined relationship that defines the propagation and behavior of these waves.

What is Physics Valhalla?
A learning space for children's Mind Map sessions.
How do electromagnetic waves travel?
At the speed of light in vacuum.
What are Maxwell's equations?
Laws showing how electric and magnetic fields generate waves.
What is displacement current?
Introduced to align magnetic field behavior with electric waves.
How is intensity of electromagnetic waves calculated?
Half epsilon not a not square in C or be not square C / 2 m note.

00:00

Himanshu Gupta welcomes children to Physics Valhalla for a Mind Map session on Electro Magnetic Waves.
The chapter covers properties of electromagnetic waves, displacement current, and Maxwell's equations.
Electromagnetic waves consist of oscillating electric and magnetic fields perpendicular to each other.
These waves travel at the speed of light in vacuum, with no particles and finite mass.
Displacement current was introduced to align magnetic field behavior with electric field waves.
Maxwell's equations combine existing laws to show how accelerating electric and magnetic fields generate electromagnetic waves.
Properties of electromagnetic waves include perpendicular electric and magnetic fields, with energy proportional to field strengths.
The direction of wave propagation is determined by the cross product of electric and magnetic fields.
The average energy of an electromagnetic wave is calculated using the square of field strengths.
Energy is equally distributed in unit volume or unit area between electric and magnetic fields.

16:19

The energy of the electric field is given by van by four x van not in not square, while the energy of the magnetic field is van by four m note square by 2. The speed of a wave in a vacuum is determined by omega by k or e0 / v0, with the ratio of e0/v0 equal to 1 / √μ knot/μ.
Intensity, defined as energy per unit area per unit time, is half epsilon not a not square in C or be not square C / 2 m note. Radiation pressure, exerted when electromagnetic force collides with an object, is equal to intensity upon speed of light, with completely reflected pressure being 2i/c. Electromagnetic waves carry momentum defined as unit energy density upon C, indicating the direction and energy propagation, calculated as A cross B divided by μ0.