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Close the Door--You're Letting the Cold In!
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Actually no, you aren't letting the cold in when you leave the door open in winter. That's a common misconception that will be gently put to rest in this chapter. There will, however, be a discussion of the tranfer…
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Energy transformations take place all over the Earth without humans ever getting involved. Being the control freaks that we are, though, we spend a lot of time trying to direct those energy transformations to make our…
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This book starts with a rather simplistic view of what light is. This chapter starts with a simple explanation which will be easy to understand and it will explain quite a few things. Also, historically, it's the one…
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You're probably really upset that all you have so far is a simple little ray model of light. When do we get to the good stuff, you say? How about now? As a bonus, you get to look at lots of pretty colors. This chapter…
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It's time to take some of the things we know about light and put them to good use. In this chapter, the author discusses various optical instruments like antennae and lenses, and in the Applications section, you get to…
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If you browse through the sunglasses at your local department store, you'll find that some of them are advertised as "polarized." What is it that makes a pair of polarized sunglasses so special, and are they really…
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Light doesn't always travel in straight lines. It can bend around corners, just like sound. When it does change direction like this, you end up with light waves that originated from different places coming together at…
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This chapter is, as the title indicates, all about eyeballs and how they work. We'll use just about everything we've learned so far, plus one or two new things, including how to draw 3-D pictures. You'll be asked to do…
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Fire the Photon Torpedoes, Mr. Sulu!
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Yeah, what about those photon torpedoes? Aren't photons supposed to be little light particles? Yes, they are, and they constitute the third model for what light is. Although much of the photon stuff is beyond the scope…
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Stop Children, What's That Sound?
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Aging hippies might recognize the title of this chapter from an old Buffalo Springfield song. Others will just have to ignore it, and realize that this is the first chapter in a book on sound. As you go through this…
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Unless you really haven't been paying attention to the world around you, you know that plucked strings produce sounds. Carlos Santana demonstrates this on a regular basis. Because stringed instruments are so commonly…
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Sound travels in waves, but those waves aren't exactly like waves on a string. One nice things is that sound waves have all the same relationships between frequency, wavelength, and velocity that waves on a string have…
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Harmonic convergence refers to a day back in 1987 where there was a particular planetary alignment. New Agers went crazy over the event, and if you want to get a taste of what it was like, enter harmonic convergence…
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Waves Do Basic Math--Adding and Subtracting
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So far we've been dealing with single sources of sound, and how they produce the pitches you hear. But you don't go to the symphony to hear a single oboe, and when you hear a solo guitarist, he or she doesn't keep your…
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Yep, you guessed it. This chapter is all about music. Yes, we've already talked about music and musical instruments, but we're going to get into this subject in more detail. For example, you might already know that…
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