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The lowest voltage makes the longest reed vibrate. The spinning disk excites the reeds of different lengths at different speed of rotations. The longest “tooth” vibrates when the disk spins the slowest. ASU copyright 2nd reed ASU copyright 3rd reed ASU copyright 4th reed ASU copyright 5th reed ASU copyright 6th reed ASU copyright
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PHYSICS |
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| 3A60.50C | Resonance Reeds | Rating: |
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Captions and Credits to the left in the sidebar. |
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Description: A set of steel reeds mounted on a common strip is excited by a variable speed motor with an unbalanced flywheel. |
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| Room:PS F175 | Location: Ba3 | Sublocation: | ||
| Type: demo | Date Added:8/20/2002 | Condition: | ||
| Quantity:1 | Complete: | Last updated: 5/8/2007 | ||
| Purpose: | ||||
| Safety Issues: Disclaimer (Warning - work in progress - may be incomplete) | ||||
| Equipment Issues: Should paint the reeds white. | ||||
| Parts:
Demo unit 0-30VDC power supply. |
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| Copyright © 2000 | Instructions:Connect the motor to a variable DC power supply. Gradually increase the motor's RPM (voltage) and watch the reeds vibrate in turn, longest to shortest. | |||
| Arizona Board of Regents | Notes: | |||
| Webmaster Privacy | ||||
| Accessibility | References: | |||
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Links: | Movie: | Caption: | |
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| 1A0 | MEASUREMENT |
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| 1A10 | Basic Units |
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| 1A10.10 | Basic units set-Video | Video Encyclopedia: Show a clock with a second sweep, meter & yard sticks, and kilogram and pound mass |
VE01_01
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3_1
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PS F175
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| 1A10.35 | Meter stick - 4 sided | Graduated in meters, decimeters, centimeters, & millimeters |
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Aa2
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PS F175
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| 1A10.50 | Liter Cube/set |
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Aa2
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PS F175
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| 1A10.510 | Meter Cube | Meter cube frame, stored dismantled |
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Aa2
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PS F175
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| 1A10.520 | Volume Perception Paradox | One liter of colored water is poured from a sphere to cylinder. The sphere seems smaller but is of equal volume. |
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PS F175
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| 1A10.60 | Avogadro's Number box | Black 22.4 liter cube |
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Aa2
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PS F175
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| 1A20 | Error and Accuracy |
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| 1A20.10 | Gaussian curve - Video | Video Encyclopedia: A commercial device for the overhead projector where ball bearings roll through an array of nails into parallel chutes. |
VE16_12
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3_1
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PS F175
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| 1A20.25A | Dice - ordinary |
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Aa2
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PS F175
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| 1A20.25B | Dice - overhead |
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Aa2
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PS F175
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| 1A20.25C | Dice - polyhedral |
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Aa2
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PS F175
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| 1A20.25D | Dice - large foam |
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Aa2
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PS F175
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| 1A30 | Coordinate System |
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| 1A30.10A | XYZ Coordinate axes | Long arrow shafts with label attachments |
top
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7
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PS F175
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| 1A30.10B | XYZ Coordinate axes | Zometool version |
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Aa3
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PS F175
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| 1A30.10C | XYZ Coordinate axes | Medium arrow shafts with dull broadheads |
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cabinet
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PS H356
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| 1A30.30 | Polar Coordinates | A semi circle is rotated about an axis to demonstrate why integration over theta is from zero to 180 degrees. |
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Aa3
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PS F175
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| 1A30.30 | Polar Coordinates |
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| 1A30.40A | Chalkboard Globe - Large |
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Af6
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PS H156
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| 1A30.40B | Chalkboard Globe - Small |
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Af6
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PS H156
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| 1A40 | Vectors |
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| 1A40.001 | Vector models, Magnetic Field model, Electric Field model, Electromagnetic Field model | Three cardboard vector models. 1) A uniform vector field represented by 9 arrows in 3 by 3 array. 2)Single vector represent by an arrow perpendicular to cardboard. 3) Same as 2) except a circle is drawn around the arrow to represent the curl of the vector |
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Aa3
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PS F175
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| 1A40.10 | Vector components (3D)-Video | Video Encyclopedia : Metal arrows define a three dimensional coordinate system. An arbitrary vector is viewed in three planes. |
VE01_07
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3_1
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PS F175
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Records 1 to 25 of 1978
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