Place the following types of radiation in order of...

Place the following types of radiation in order of increasing energy per photon.
(a) radar signals
(b) radiation within a microwave oven
(c) gamma rays from a nuclear reaction
(d) red light from a neon sign
(c) ultraviolet radiation from a sun lamp

Key Concepts

Electromagnetic Radiation

Electromagnetic radiation is a form of energy that propagates through space as waves or particles. It spans a broad spectrum that includes various types, ranging from low-energy radio waves to high-energy gamma rays. This concept is central to understanding the different forms of radiation and their properties as well as their behavior in various contexts.

Photon Energy

Photon energy refers to the energy carried by a single photon, which is directly proportional to the frequency of the electromagnetic radiation as described by Planck's equation (E = hf). Higher frequency radiation, such as gamma rays, carries more energy per photon compared to lower frequency radiation, like radio waves.

Electromagnetic Spectrum

The electromagnetic spectrum categorizes all types of electromagnetic radiation by their wavelengths or frequencies. It provides a framework for understanding how various forms of radiation—from radio waves and microwaves to visible light and gamma rays—differ in energy and interaction with matter, making it essential for comparing these types based on energy per photon.

Frequency-Wavelength Relationship

The frequency-wavelength relationship is a fundamental concept that explains how the energy of radiation is inversely related to its wavelength. This means that shorter wavelengths (or higher frequencies) correspond to higher energy photons, which is a key idea when ordering different electromagnetic radiations by energy.

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