1N30.62 - Multiple Ball Drop - Astro-Blaster (TM)
- Richard V. Mancuso and Kevin R. Long, "The Astro-Blaster", TPT, Vol. 33, #6, Sept. 1995, p. 358.
- Walter Roy Mellen, "Aligner for Elastic Collision of Dropped Balls", TPT, Vol. 33, #1, Jan. 1995, p. 56.
- Neil M. Shea, "Nonideal Multiball Collisions", TPT, Vol. 30, #4, Apr. 1992, p. 197.
- Jay S. Huebner and Terry L. Smith, "Multi-Ball Collisions", TPT, Vol. 30, #1, Jan. 1992, p. 46.
- Jodi and Roy McCullough, "Conservation of Momentum and Energy with an Astroblaster", The Role of Toys in Teaching Physics", p. 4.24.
- Bill Franklin, "Stacked Balls", Teaching About Impulse and Momentum, p. 4.18.
- Cunningham and Herr, "5.2.4. Conservation of Energy", Hands-On Physics Activities with Real Life Applications, p. 290.
- Christopher P. Jargodzki and Franklin Potter, "247. Velocity Amplification", Mad About Physics, p. 98, 237.
- Jearl Walker, "1.43. Dropping a Stack of Balls", The Flying Circus of Physics Ed. 2, p. 21.
- Wayne D. Peterson, "Velocity Amplifier Using Stacked Disks", Brigham Young University, 1999 AAPT Apparatus Competition.
- Bobby Mercer, "Ball Blaster", Junk Drawer Physics, p. 42.
- William G. Harter, "Velocity Amplification in Collision Experiments Involving Superballs", AJP, Vol. 39, #6, June 1971, p. 656.
- Borislaw Bilash II, “Transfer of Momentum“, A Demo A Day – A Year of Physical Science Demonstrations, p. 247.
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