Early in the 17th century, Francis Bacon decided that the best way to learn about the world was to discover things for oneself. Since then, science has been a marriage of observation and experimentation. The experiments contained in each chapter allow young scientists to investigate basic principles using common household materials and easy-to-follow instructions. The titles are filled with dozens of color photographs that illustrate experiments and provide a glimpse of everyday and extraordinary uses of the subject. In addition, engaging features such as "Did You Know?" boxes provide fascinating facts. The "In Focus" sections offer in-depth looks at specific features of each subject. "In The Real World" boxes highlight pivotal experiments by real scientists.
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CIRCUITS IN ACTION 28
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Alternating current aluminum foil animal electricity become negatively charged become positively charged bulb flange bulb holder bulb light cardboard cell chemical reaction cloth conductors conducts electricity Connect one end copper wire current flows Direct current droplets electrical charge electrical circuit electrical current electrical energy electrical fluid flows electrical resistance electricity flows electromotive force electroscope experiment fibers filament flow of electricity fluff focu HOW ELECTRIC foil strip Frankenstein free clip ends free electrons Galvani glows Graaff hair lemon Leyden jar light bulb Lightning flashes loop materials metal Neutrons number of electrons pencil piece of tape positive ions atoms potential difference protons push real world resistance rub a balloon Rubbing the balloon scientist Benjamin Franklin Soon scientists static charge static electricity steel wire stick substances substations SUPERCONDUCTORS supply of electricity sweater switch talcum powder tiny particle transmit Van de Graaff voltage volts wear antistatic bracelets William Gilbert