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  • A feather is dropped.  The motion is recorded with a strobe light that flashes 30 times a second (30 Hz).  The falling feather quickly is slows by air friction and reaches its terminal velocity.
    k13-best-feather-drop.jpg
  • A feather is dropped.  The motion is recorded with a strobe light that flashes 30 times a second (30 Hz).  The falling feather quickly is slows by air friction and reaches its terminal velocity.
    K13-best-feather04.jpg
  • .This is a demonstration of a ball rolling down an incline. The analysis of this demo requires the use of the  kinetic energy, potential energy, rolling energy, and friction.   The  ball is 2.5 cm in diameter. The flash illuminates the scene at 40 hz showing images every  .025 seconds of time. .
    K12-full-lAccel8115blue.jpg
  • This is a demonstration of a ball rolling up an incline, slowing down, and then speeding up as it rolls down the opposite side.  The ball is rolling from left to right in this image.  The analysis of this demo requires the use of the  kinetic energy, potential energy, rolling energy, and friction.   The  ball is 2.5 cm in diameter. The flash illuminates the scene at 40 hz showing images every  .025 seconds of time.
    K12-coaster8207blue.jpg
  • .This is a demonstration of a ball rolling down an incline and almost making the loop-the-loop path.  The ball does not have enough velocity to make the loop.  The velocity required to make the loop is called the critical velocity, and this show a situation where the ball leaves the surface of the track, or the normal force from the track on the ball is zero.  The analysis of this demo requires the use of the centripetal force, kinetic energy, potential energy, rolling energy, and friction.  This is also an example of a sub critical velocity.  The loop is 19.5 cm in diameter and the ball is 2.5 cm in diameter. The flash illuminates the scene at 40 hz showing images every  .025 seconds of time. .
    K12-looploop8096white.jpg
  • .This is a demonstration of a ball rolling down an incline and making the loop-the-loop path.  The velocity required to make the loop is called the critical velocity.   The analysis of this demo requires the use of the centripetal force, kinetic energy, potential energy, rolling energy, and friction.  This is also an example of a critical velocity.  The loop is 19.5 cm in diameter and the ball is 2.5 cm in diameter. The flash illuminates the scene at 40 hz showing images every  .025 seconds of time. .
    K12-full-loop8115red.jpg
  • This is a demonstration of a ball rolling down an incline, slowing down, and then speeding back to where it started.  The ball is rolling from left to right in this image.  The analysis of this demo requires the use of the  kinetic energy, potential energy, rolling energy, and friction.   The  ball is 2.5 cm in diameter. The flash illuminates the scene at 40 hz showing images every  .025 seconds of time.
    K12-coaster8298.jpg
  • This is a demonstration of a ball rolling up an incline, slowing down, and then speeding up as it rolls down the opposite side.  The ball is rolling from left to right in this image.  The analysis of this demo requires the use of the  kinetic energy, potential energy, rolling energy, and friction.   The  ball is 2.5 cm in diameter. The flash illuminates the scene at 40 hz showing images every  .025 seconds of time.
    K12-coaster8263.jpg
  • This is a demonstration of a ball rolling up an incline, slowing down, and then speeding up as it rolls down the opposite side.  The ball is rolling from left to right in this image.  The analysis of this demo requires the use of the  kinetic energy, potential energy, rolling energy, and friction.   The  ball is 2.5 cm in diameter. The flash illuminates the scene at 40 hz showing images every  .025 seconds of time.
    K12-coaster8207.jpg
  • .This is a demonstration of a ball rolling down an incline and almost making the loop-the-loop path.  The ball does not have enough velocity to make the loop.  The velocity required to make the loop is called the critical velocity, and this show a situation where the ball leaves the surface of the track, or the normal force from the track on the ball is zero.  The analysis of this demo requires the use of the centripetal force, kinetic energy, potential energy, rolling energy, and friction.  This is also an example of a sub critical velocity.  The loop is 19.5 cm in diameter and the ball is 2.5 cm in diameter. The flash illuminates the scene at 40 hz showing images every  .025 seconds of time. .
    K12-looploop8096.jpg
  • .This is a demonstration of a ball rolling down an incline and making the loop-the-loop path.  The velocity required to make the loop is called the critical velocity.   The analysis of this demo requires the use of the centripetal force, kinetic energy, potential energy, rolling energy, and friction.  This is also an example of a critical velocity.  The loop is 19.5 cm in diameter and the ball is 2.5 cm in diameter. The flash illuminates the scene at 40 hz showing images every  .025 seconds of time. .
    K12-full-loop8115white.jpg
  • .This is a demonstration of a ball rolling down an incline. The analysis of this demo requires the use of the  kinetic energy, potential energy, rolling energy, and friction.   The  ball is 2.5 cm in diameter. The flash illuminates the scene at 40 hz showing images every  .025 seconds of time. .
    K12-full-lAccel8115red.jpg
  • This is a demonstration of a ball rolling up an incline, slowing down, and then speeding up as it rolls down the opposite side.  The ball is rolling from left to right in this image.  The analysis of this demo requires the use of the  kinetic energy, potential energy, rolling energy, and friction.   The  ball is 2.5 cm in diameter. The flash illuminates the scene at 40 hz showing images every  .025 seconds of time.
    K12-coaster8207red.jpg
  • A Scanning electron microscope (SEM) image of a crystal structure found inside a micrometeorite. The field of view of this image is 80 um wide. Micrometeorites routinely fall all over the surface of earth. This is primarily an iron meteorite with small amounts of other elements. This meteorite melted from atmospheric melting as it was captured in the earths atmosphere. The frictional heating melted the martial and surface tension of the molten metals brought it to a circular shape. Magnetic iron micrometeorites are easy to find with the help of a strong magnet. The crystal structure of the meteorite is visible in this image.
    K18SEM-MM-W7B.jpg
  • A Scanning electron microscope (SEM) image of a micrometeorite. The diameter of this meteorite is 320 um. This sample has iron and nickel melted around a grain of almost pure titanium. This is not a rare find, there are several other samples such as this sited in the technical literature.        Micrometeorites routinely fall all over the surface of earth. This is primarily an iron meteorite with small amounts of other elements. This meteorite melted from atmospheric melting as it was captured in the earths atmosphere. The frictional heating melted the martial and surface tension of the molten metals brought it to a circular shape. Magnetic iron micrometeorites are easy to find with the help of a strong magnet. The crystal structure of the meteorite is visible in this image.
    K18SEM-MM-SB-002B.jpg
  • A Scanning electron microscope (SEM) image of a micrometeorite. The diameter of this meteorite is half a millimeter or 300um. Micrometeorites routinely fall all over the surface of earth. This is primarily an iron meteorite with small amounts of other elements. This meteorite melted from atmospheric melting as it was captured in the earths atmosphere. The frictional heating melted the martial and surface tension of the molten metals brought it to a circular shape. Magnetic iron micrometeorites are easy to find with the help of a strong magnet. The crystal structure of the meteorite is visible in this image.
    K18SEM-MM-penfield-H-best01A.jpg
  • A Scanning electron microscope (SEM) image of a micrometeorite. The diameter of this meteorite is 300um. Micrometeorites routinely fall all over the surface of earth. This is primarily an iron meteorite with small amounts of other elements. This meteorite melted from atmospheric melting as it was captured in the earths atmosphere. The frictional heating melted the martial and surface tension of the molten metals brought it to a circular shape. Magnetic iron micrometeorites are easy to find with the help of a strong magnet. The crystal structure of the meteorite is visible in this image.
    K18SEM-MM-170906wreflectA.jpg
  • A Scanning electron microscope (SEM) image of a micrometeorite. The diameter of this meteorite is .6 millimeter or 600um. Micrometeorites routinely fall all over the surface of earth. This is primarily an iron meteorite with small amounts of other elements. This meteorite melted from atmospheric melting as it was captured in the earths atmosphere. The frictional heating melted the martial and surface tension of the molten metals brought it to a circular shape. Magnetic iron micrometeorites are easy to find with the help of a strong magnet. The crystal structure of the meteorite is visible in this image.
    K18SEM-MM-170905W5-H038C.jpg
  • A velomobile or bicycle car is a human-powered vehicle, enclosed for protection from weather and collisions.  Here a man is peddling the velomobile in a recumbent position.  The velomobile is built on a recumbent bike frame with two steerable wheels in the front and one wheel in the back.  This tricycle design allows for a stable vehicle on wet roads.  The vehicle is air streamed to decrease wind resistance and shield the rider from rain.  As fuel consumption becomes more of an issue, more commuters will switch to human powered vehicles.
    K08velomobile0106.jpg
  • A velomobile or bicycle car is a human-powered vehicle, enclosed for protection from weather and collisions.  Here a young man is peddling the velomobile in a recumbent position.  The velomobile is built on a recumbent bike frame with two steerable wheels in the front and one wheel in the back.  This tricycle design allows for a stable vehicle on wet roads.  The vehicle is air streamed to decrease wind resistance and shield the rider from rain.  As fuel consumption becomes more of an issue, more commuters will switch to human powered vehicles.
    K08velomobile9963.jpg
  • A velomobile or bicycle car is a human-powered vehicle, enclosed for protection from weather and collisions.  Here a young man is peddling the velomobile in a recumbent position.  The velomobile is built on a recumbent bike frame with two steerable wheels in the front and one wheel in the back.  This tricycle design allows for a stable vehicle on wet roads.  The vehicle is air streamed to decrease wind resistance and shield the rider from rain.  As fuel consumption becomes more of an issue, more commuters will switch to human powered vehicles.
    K08velomobile9969.jpg
  • A Scanning electron microscope (SEM) image of a micrometeorite. The diameter of this meteorite is 1 mm. This micrometeorite was ground in half and polished. Micrometeorites routinely fall all over the surface of earth. This is primarily an iron meteorite with small amounts of other elements. This meteorite melted from atmospheric melting as it was captured in the earth’s atmosphere. Magnetic iron micrometeorites are easy to find with the help of a strong magnet. The crystal structure of the meteorite is visible in this image.
    K18SEM180628MM0012A.jpg
  • A Scanning electron microscope (SEM) image of a micrometeorite. The width of this image is 400 um. This micrometeorite was ground in half and polished. Micrometeorites routinely fall all over the surface of earth. This is primarily an iron meteorite with small amounts of other elements. This meteorite melted from atmospheric melting as it was captured in the earth’s atmosphere. Magnetic iron micrometeorites are easy to find with the help of a strong magnet. The crystal structure of the meteorite is visible in this image.
    K18SEM180628MM0014A.jpg
  • An apple and a feather are released at the same time.  The feather that is falling in a vacuum chamber falls at the same rate as the apple in the air.  The feather and the apple have metal pins in them that are attracted to the strong magnets in the release mechanism that can be seen at the top of the image.  The flash is triggered at 1/20th of a second interval.  The apple and feather do accelerate at the same rate..The vacuum pressure was 30 microns.
    K12-gravity-apple001.JPG
  • A Scanning electron microscope (SEM) image of a micrometeorite. The diameter of this meteorite is 900 um. This micrometeorite was ground in half and polished. Micrometeorites routinely fall all over the surface of earth. This is primarily an iron meteorite with small amounts of other elements. This meteorite melted from atmospheric melting as it was captured in the earth’s atmosphere. Magnetic iron micrometeorites are easy to find with the help of a strong magnet. The crystal structure of the meteorite is visible in this image.
    K18SEM180628MM0010A.jpg
  • An apple and a feather are released at the same time.  The feather that is falling in a vacuum chamber falls at the same rate as the apple in the air.  The feather and the apple have metal pins in them that are attracted to the strong magnets in the release mechanism that can be seen at the top of the image.  The flash is triggered at 1/20th of a second interval.  The apple and feather do accelerate at the same rate..The vacuum pressure was 30 microns.
    K12-gravity-apple004.JPG
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Ted Kinsman

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