Breadcrumb Home > Ask the Editors Archive > Inventions Cite Ask the Editors Archive Inventions Jump to a category: - Any -CountriesCivicsFoodAwardsLanguageSportsMoviesAnimalsScienceHumanityUS CitiesUS HistoryMiscellanyArtsMoneyGeographyMathUS StatesInventionsPeopleReligionLiteratureCalendarRace GenderNatureUS StatisticsAstronomyPresidentsWeatherTelevisionHistoryIndex A project I am working on for this class requires that I know the exact distance between the grooves on a CD. I've looked everywhere, and I cannot find this information. I was hoping that you could tell me what the distance is, or at least where I could find such information on the Internet. Did William Sturgeon invent the electromagnet? And if so why was that important? Can you tell me what year and what model of car was the first to have a heater installed? My son and a friend are working on a an 8th grade history project. Could you tell us who invented or patented bearings? He loves skateboarding and this is why he chose this topic. What product was the first to be purchased by scanning its barcode? My son came home and asked me when KOOL-AID was invented, and by who. Can you help? What were the first U.S. cities linked by a transcontinental phone line? Is the monkey wrench named for a man named Moncky? When were contact lenses invented? Where did the name "pap smear" come from? Why do trains have emergency cords available to the public? Is there EVER a case where a passenger pulling the cord would be the right course of action? Who invented the parking meter? Who invented the ambulance vehicle? Who invented peanut butter? Who was the first person to be cremated in the U.S.? Who is the Phillips head screwdriver named after? Is there really a Phillips? When was the Heimlich maneuver first demonstrated? Who was the only U.S. president to have a patent on an invention? What was the invention? A chemical first prepared by Felix Hoffman in 1897 and patented in 1899 became one of the most globally popular drugs of all time. Name it. How did the lady who thought up the Slinky get the company to pay her for her idea? Pagination Current page 1 Page 2 Next page Next › Last page Last » Top Ten Frequently Asked QuestionsOther Archives:Feature ArchivePoll ArchiveQuiz ArchiveTimeline ArchiveTop Ten Archive
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