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To make dolphin: Trace dolphin template onto Chinet plates (twice); remove tail; slot tail. Print dolphin template on card stock; tape onto one of the dolphin-shaped pieces of Chinet plate. Create a "sandwich" by joining the card stock doplhin shapes (with a skewer in the middle). Slot body and add tail (which is also made of Chinet plate).
To make pendulum: Trace jar lid twice on Chinet plate; tape a 1/2 inch washer on each circle (washers should be on opposite ends of diagonal).
References
Nerf Projectile Targets on String
frugalfun4boys.com/make-nerf-spinning-target/
Discovering Science by Mark & Olga Fox (dolphin shown on cover)
books.google.com/books?id=4qDABZOtQ3oC&lpg=PA4&dq...
"Exploration 5.3" in Physics Made Simple by Christopher Gordon De Pree, Ira Maximilian Freeman
books.google.com/books?id=3_IwTCl9S3MC&lpg=PA39&d...
(Students may also want to vary arc length and mass of pendulum bob)
Dolphin Template
www.0to5.com.au/templates/printable/dolphin.htm
Materials
Chinet Classic White Dinner Plate
Bamboo skewers
Powerade Zero Bottles
Dorman Color Electrical Tape
Con-Tact Ultra Grip Shel & Drawer Liner
Hillman Zinc 1/2 inch washer
Wausau Paper Index Card Stock 110lb White
Ball wide-mouth Mason one quart canning jar (outer ring of lid used as circle template)
Physics student Holly Leopardi examines the torsion fiber issuing from a magnetic eddy-current damper. The damper suppresses unwanted oscillations of the pendulum. At left is part of one of the mirrors that route a laser beam to measure the pendulum’s twist, or torsion.
See more at now.humboldt.edu/news/hsu-students-put-einstein-theory-to...
Remember to get fucked before you get in, o/w you wont be able to get to sleep and sit at work like a zombie.
Contact Graeme Power
powerclocks@hotmail.com if you can help/send me pictures of any 400 Day Anniversary clock for a proposed publication about these beautiful clocks, anything and everything, nothing rejected.
Check out my Bikes, Clocks and Kerosene Lamp memorabilia, A Junghans 400 Day clock with an unusual Chronometer Pendulum in a wood Conventional Style carved case with Bevelled Glass, quite collectable and attractive in any decor, a very interesting clock The case lifts off and does not open from the front or the rear, these cases were made both ways and models that do open from the front and back were made but this is not one of them, the finish is superb and the dial is one of the nicest you will ever buy, the 400 Day Clocks are a mis-understood section of clock collecting and as such they can be obtained quite cheaply still. I am allways interested in parts or the unusual, Ansonia Swinger Clocks, Banjo Clocks (weight driven) Vienna regulator clocks and parts English Grandfather Clock Movements with Small Brass Dials and Carriage clocks contact me at powerclocks@hotmail.com
Photos on my flickr Site are The Property of and Copyright to Graeme Power
powerclocks@hotmail.com The use of this image without my consent in writing is denied.
I do not give out Serial numbers for any Clocks on my site, if you ask I will not reply.
After our Variables Science unit we decided to invent our own pendulums using materials from the classroom
This enormous block of concrete hung suspended from a special roller to keep the conveyor belt tensioned.
Pendulum "The Unseen Impact" is the theme for our first TEDxDamanhur event for 2016. This year we decided to choose topics about the backstage process which nobody knows about it, but everyone knows the final stage thinking it's easy to reach this stage. Hope you enjoy our photos.
Photographs by Mohamed ElGhool
It rotates with the rotation of the earth and knocks down the little pegs as time goes by. This invention lead to the first proof of a rotating earth back in the day
While our clocks are set by an average 24 hour day for the passage of the Sun from noon to noon, the Earth rotates on its axis in 23 hours 56 minutes and 4.1 seconds with respect to the rest of the universe. From our perspective here on Earth, it appears that the entire universe circles us in this time. Some rather simple experiments demonstrate that it is really the rotation of the Earth that makes this daily motion occur, the use of a pendulum is one way to demonstrate this principle.
In 1851 French Physicist Leon Foucault (1819-1868) became renowned when he devised an experiment with a pendulum that demonstrated the rotation of the Earth. Inside the dome of the Pantheon of Paris he suspended an iron ball about 1 foot in diameter from a wire more than 200 feet long. The ball could easily swing back and forth more than 12 feet. Just under it he built a circular ring on which he placed a ridge of sand. A pin attached to the ball would scrape sand away each time the ball passed by. The ball was drawn to the side and held in place by a cord until it was absolutely still. The cord was burned to start the pendulum swinging in a perfect plane. Swing after swing the plane of the pendulum turned slowly because the floor of the Pantheon was moving under the pendulum. The plane of the pendulum's swing rotated clockwise 11° per hour, making a full circle in 32.7 hours.
We know this device today as the Foucault pendulum. Almost every major science museum in the world has one on display. This one is located at the Griffith Park Observatory in Los Angeles. The pendulum is located under the central dome near the entrance to the observatory and is one of the Observatory's most popular exhibits. The pin at the end of the pendulum knocks over a black peg every seven minutes (approximately). At the latitude of Los Angeles the pendulum takes approximately forty two hours to complete its circle (thus the numbers 1 - 42 are inscribed in the circular pit). The arc in my photograph shows the numbers 2-14.
© Lawrence Goldman 2009, All Rights Reserved
This work may not be copied, reproduced, republished, edited, downloaded, displayed, modified, transmitted, licensed, transferred, sold, distributed or uploaded in any way without my prior written permission.
Images from my 5 day trip to Ultra Colombia, Ultra Chile & Ultra Buenos Aires
February 19-25, 2014
Downtown Miami. USA
Client: Ultra Music Festival
© 2014 www.rudgr.com
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CLICK HERE: www.youtube.com/watch?v=zSmThc2SFJA
I couldn't decide if this is going to slow or not, and youtube makes it play weirdly jumpy.
But anyway, this is the pendulum. I used the graph editor, but breaking the tangents so the pendulum slows down as it reaches the peak. I also pasted this same motion twice to repeat the swinging motion, but since it loses speed I tried to make it a little lower the next time. Not sure if that is obvious enough though.