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10 Gadgets That Will Make Dad's Day

electronics.howstuffworks.com/gadgets/other-gadgets/10-gadgets-that-will-make-dads-day.htm

These gadgets are great for Father's Day or for other birthdays and celebrations. See 10 gadgets at HowStuffWorks that will make dad's day.

How Astrolabes Work

electronics.howstuffworks.com/gadgets/clocks-watches/astrolabe.htm

Astrolabes are exquisitely crafted instruments that have hundreds of uses. Isn't it time you learned how to use this handy decoder of the sky?

How Thermochromic Ink Works

electronics.howstuffworks.com/gadgets/other-gadgets/thermochromic-ink.htm

Thermochromatic ink is temperature-sensitive and once rocked the '70s. Find out how thermochromatic ink works.

How Dive Watches Work

electronics.howstuffworks.com/gadgets/clocks-watches/dive-watches.htm

Dive watches don't just tell time; they can save your life. Find out how dive watches work and the benefits to divers.

How FitBit Works

electronics.howstuffworks.com/gadgets/fitness/fitbit.htm

The FitBit tracker helps you stay healthy by nudging you to eat well, get exercise and get enough sleep. See how FitBit works.

How Bone-conducting Headphones Work

electronics.howstuffworks.com/gadgets/audio-music/bone-conducting-headphones.htm

Using bone-conducting headphones instead of ear buds may be a lot better for your ears. How do these bone-conducting headphones do their job?

How E-writers Work

electronics.howstuffworks.com/gadgets/other-gadgets/e-writers.htm

E-writers are simple electronic devices that let you write down your thoughts. Learn all about the features and pros/cons of e-writers.

How Jukeboxes Work

electronics.howstuffworks.com/gadgets/audio-music/jukebox.htm

Jukeboxes are a colorful slice of Americana that brought on-demand music to the masses. Take a look inside a jukebox and find out how jukeboxes work.

How Vibration Speakers Work

electronics.howstuffworks.com/gadgets/audio-music/vibration-speakers.htm

Vibration speakers work with other surfaces to enhance sounds. Learn all about how vibration speakers work.

How does my device's accelerometer know how far I ran on the treadmill?

electronics.howstuffworks.com/gadgets/fitness/accelerometer-know-how-far-ran-on-treadmill.htm

An accelerometer on your gadget can tell you how far you've run on a treadmill. Want to know how? Find out how accelerometers know how far you've ran.

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