GCF

Member Since: January 13, 2011

Country: United States

  • News - February Caption Contest | about 3 months ago

    True sadness is not having a long enough arm to selfie your entire hat.

  • News - Your SparkFun January Cap… | about 4 months ago

    John Connor travels from the future to destroy SparkFun’s new robot kit parts, in fear that SkyNet will be built from Arduinos and Actobotics.

  • News - December Caption Contest | about 5 months ago

    Introducing SparkFun’s new improv troupe: Haberdashing!

  • | about 8 months ago

    I taught high school physics, so teaching why resistors and capacitors do what they do and why they do it always came down to analogies. The students always enjoyed relating a parallel plate capacitor to a junior high dance floor. All the girls (positive charges since girls are cheery) and boys (negative charges, obviously), line up on opposite sides of the dance floor. However, they never actually cross the dance floor, since they are in junior high and are afraid of each other. If you make the dance floor wider, then more boys and girls can line up, which gives you more capacity for the kids - this is an increase in capacitance. On the other hand, if you make the dance floor really wide, the boys and girls are less interested in each other and don’t want to line up anymore - this is a decrease in capacitance.

    This explains the general equation that C=(epsilon)A/d. The width of the dance floor is the area of the capacitor. As the area increases, the capacitance increases. The distance between the boys and girls is like the distance between the plates of a capacitor. As the distance increases, the capacitance decreases.

    If you want to get really crazy, you can explain that the permittivity of the material or dielectric (epsilon) is similar to whether that are obstacles that block the view of the girls and boys on the dance floor. The less their vision is permitted, the lower the epsilon value, and the lower the capacitance. The higher the permittivity, the higher the capacitance.

  • News - Midwest Tour and Win a Fr… | about 8 months ago

    I taught high school physics, so teaching why resistors and capacitors do what they do and why they do it always came down to analogies. The students always enjoyed relating a parallel plate capacitor to a junior high dance floor. All the girls (positive charges since girls are cheery) and boys (negative charges, obviously), line up on opposite sides of the dance floor. However, they never actually cross the dance floor, since they are in junior high and are afraid of each other. If you make the dance floor wider, then more boys and girls can line up, which gives you more capacity for the kids - this is an increase in capacitance. On the other hand, if you make the dance floor really wide, the boys and girls are less interested in each other and don’t want to line up anymore - this is a decrease in capacitance.

    This explains the general equation that C=(epsilon)A/d. The width of the dance floor is the area of the capacitor. As the area increases, the capacitance increases. The distance between the boys and girls is like the distance between the plates of a capacitor. As the distance increases, the capacitance decreases.

    If you want to get really crazy, you can explain that the permittivity of the material or dielectric (epsilon) is similar to whether that are obstacles that block the view of the girls and boys on the dance floor. The less their vision is permitted, the lower the epsilon value, and the lower the capacitance. The higher the permittivity, the higher the capacitance.

  • News - January Caption Contest | about a year ago

    Due to his propensity for creating cold solder joints, he earned the call-sign Iceman.

  • News - September Caption Contest | about 2 years ago

    While intended for safety in the event of crash, the hat also added an important stylistic element to the racing outfit.

  • News - June Caption Contest | about 2 years ago

    Humans, feeling comforted by the robot’s friendly smile, quickly forget that the robot is only tuned to the Brown Note.

  • News - March Caption Contest | about 2 years ago

    The new micro controllers come with a new wireless communication protocol, WhiteTooth, automatically pre installed.

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