{"product_id":"light-a-fairy-tale","title":"Light: A Fairy Tale [PDF + eBook]","description":"\u003cp\u003eWhen King John XV is crowned king of Amrath, no one is pleased — not the peasants throwing rotten vegetables, not his sensible steward Griselda, and not John himself, who would much rather be slaying dragons than governing. Then a mysterious sorceress slips into the throne room and hands him a candle, with a single warning: don't let it burn all the way down. John lights it anyway. Inside are the ghosts of five light mages — Albert Einstein, Snell, Thomas Young, Louis de Broglie, and James Clerk Maxwell — trapped by a witch and freeable only when the candle is fully burned. To free them without dying in the process, John has to become a light mage himself, learning to ride photons, refract through prisms, and pass through Young's double-slit experiment — while a rebellion gathers in the square below and a much older betrayal waits to be uncovered.\u003c\/p\u003e\n\n\u003cp\u003eWritten by Sarah Allen and illustrated by Vladimir Djekic, with cover design by Vik Charlie. Ages 9–12.\u003c\/p\u003e\n\n\u003ch2\u003eWhat's inside the book\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eFour story chapters across 39 pages, with each of the trapped light mages introducing a different physics concept — Einstein on the speed of light, Snell on refraction, Young and de Broglie on the wave nature of light, and Maxwell on electromagnetic fields\u003c\/li\u003e\n  \u003cli\u003eSeveral full-page color illustrations at pivotal story moments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePlus an extensive physics section\u003c\/h2\u003e\n\u003cp\u003eAfter the story, a dedicated physics section walks through the same concepts in clear, conversational prose. Diagrams illustrate each idea, and the actual equations are included for kids ready for algebra — though the author explicitly notes that the math can be skipped without losing the rest.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eThe speed of light — including a \"try this\" with recommended MinutePhysics, Veritasium, and Vsauce videos on whether anything can exceed it\u003c\/li\u003e\n  \u003cli\u003eColor, wavelength, and frequency — the visible spectrum, why colored objects appear the colors they do, and where infrared, microwaves, ultraviolet, and x-rays sit on the spectrum\u003c\/li\u003e\n  \u003cli\u003eReflection — including a classic mirror brainteaser (how tall does a mirror need to be to show your whole reflection?) worked through with the geometry\u003c\/li\u003e\n  \u003cli\u003eSnell's Law of refraction — index of refraction, the vacuum-cleaner-on-carpet analogy for why light bends, and a \"try this\" with the PhET \"Bending Light\" simulation from the University of Colorado\u003c\/li\u003e\n  \u003cli\u003eElectromagnetic waves — Young's double-slit experiment, the de Broglie equation, the Michelson-Morley experiment, and an introduction to Maxwell's equations and how light propagates through the vacuum of space\u003c\/li\u003e\n  \u003cli\u003eEight conceptual practice questions with a full answer key\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat you'll get\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eEPUB of the book (Kindle, Apple Books, Kobo)\u003c\/li\u003e\n  \u003cli\u003ePDF of the book (for any device or for printing)\u003c\/li\u003e\n  \u003cli\u003eDelivered by email immediately after purchase, plus available on your download page\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart of the Fairy Tale Physics series\u003c\/h2\u003e\n\u003cp\u003eEach book in the series is self-contained and can be read in any order, though readers of multiple books may notice the same physicists or recurring touches from kingdom to kingdom.\u003c\/p\u003e\n\n\u003ch2\u003eAbout the author\u003c\/h2\u003e\n\u003cp\u003eSarah Allen tutored math and physics for twenty years before becoming a full-time fantasy writer. She has a physics degree from the University of Washington (graduated with college and departmental honors) and a master's in Cognition and Learning from Columbia. Her goal is to write the sort of physics books she would have wanted as a kid.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAges 9–12 · 74 pages · Color illustrations\u003c\/strong\u003e\u003c\/p\u003e","brand":"Math with Sarah","offers":[{"title":"Default Title","offer_id":43742346182722,"sku":null,"price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/8395\/8338\/files\/1_3490364b-bcfa-40d4-b9cb-bb008f9aa74f.jpg?v=1778717907","url":"https:\/\/shop.mathwithsarah.com\/products\/light-a-fairy-tale","provider":"Math with Sarah","version":"1.0","type":"link"}