Conic Sections defined
parabola
Keck Observatory, Mauna Kea (2009)
telescopes atop Mauna Kea, HI (2010)
Solar Oven for developing nations
Parabolic trajectory (John H., Mammoth)
John H., Crystal Lake, parabolic trajectory
Sling Shot, parabolic trajectory; Gaylor Lakes
WW II Memorial fountains (2008)
WW II Memorial Fountains (2008), DC
frisbee toss, JH (2009)
Volcano National Park, HI, (2009)
circle
Rotunda - US Capitol (2008)
waves from rock, Tuolomne Meadows
Mountain Bikes, Santa Monica Mountains
Lake Almanor, 2007
Ephesus amphitheater, Turkey, 2008, RH
Hale Bopp Comet, 1997
Arctic Circle, Norway
Sunrise, Antalya, Turkey, 2008
elipse
Whispering Room
Elipse, DC
eliptical roof
hyperbola
nuclear plant cooling towers
Flashlight
breaking the sound barrier (condensation cloud)
