Light, Dark, and the Electromagnetic Spectrum
by Scott Benjamin Gracie
GENRE: Non-Fiction (SCIENCE / Physics)
BLURB:
Since the dawn of time, electromagnetic energy has permeated through the universe, surrounding and interacting with everything it touches, illuminating, destroying and giving life.
The colourful section of the electromagnetic spectrum we see in the form of visible light, rainbows and other phenomena is tiny when compared to its vast entirety. Using many parts of the electromagnetic spectrum have become common everyday occurrence for the majority of people on Earth, as it's been integrated into our lives in ways that we don't even think twice about it.
This book illuminates many parts of the electromagnetic spectrum and its effects, the endless ways we have harnessed its energy, and how we interact and live with its influence.
Get a copy of Light, Dark and the Electromagnetic Spectrum on AMAZON.COM, AMAZON.COM.AU, KINDLE, INDIGO CHAPTERS, BARNES & NOBLE, BOOK DEPOSITORY, and BOOKTOPIA
Excerpt:
What Is Light?
Light – The Basics
As obvious as light can be, it is also incredibly mysterious, and since ancient times people have debated exactly what light is. We now understand light is electricity and magnetism combined, and that it can be described as both a particle and a wave.
Light (electromagnetic radiation) can be described as photons travelling in a wave-like pattern while carrying energy.
When travelling in empty space, light has a fixed speed of 299,792 kilometres per second (186,281 miles per second). Quite often this number is rounded up to 300,000 kilometres per second.
The white light we can see is made up of red, orange, yellow, green, blue and violet, and each one of these colours has its own range of wavelengths associated with it.
Electricity and Magnetism Combine to Form Light
A simple way to explain electromagnetic energy is to think of a waveform with frequency and wavelength. Frequency refers to the number of crests that pass a given point, and wavelength refers to the distance between the crests or the number of times a wave crest to crest passes a given point and is measured in hertz (Hz). Radio waves have a very long wavelength and frequency, while gamma rays have a very short wavelength and frequency.
The magnetic field and electric field that make up electromagnetic energy are perpendicular to each other as they travel. This can be seen in the image below.
AUTHOR Bio and Links:
Scott's passion for light and the electromagnetic spectrum began in his early teens while tinkering with electronics as a hobby. He was formally introduced to the lighting industry while studying Electrical and Electronics in Sydney, Australia, and in 1998 he started his career making custom light fittings and lamps in his dad's garage. Formal lighting design qualifications expanded his opportunity to help project-manage and design on many industry levels.
Twenty-two years on, and Scott has worked on many major infrastructure, commercial and architectural lighting projects. He is a member of the Illuminating Engineering Society of Australia & New Zealand, the Colour Society of Australia, the International Dark Sky Association and the Astronomical Society of the Pacific.
Connect with Scott Benjamin Gracie
WEBSITE ~ GOODREADS ~ LINKEDIN
5 comments:
I liked the excerpt.
Congratulations on your release of Light, Dark and the Electromagnetic Spectrum, Scott, great excerpt, your book sounds like a very interesting read and I like the illustration! Good luck with your book and the tour!
Thanks for sharing it with me and have a magical holiday season!
I like the excerpt and look forward to reading the book.
This sounds like a fascinating read.
My oldest and my husband would love this book. Scott Benjamin Gracie is new to us, but the book is on list of gifts to buy.
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