Tuesday, January 12, 2016

Science Video: Galileo's Hypothesis Hammer and Feather Drop

Galileo's hypothesis of "all objects are affected by gravity" was proven on the moon during an Apollo mission. (when there is no air or drag on an object, all objects are affected equally by gravity). So, here's your FUN Physics lesson for the day:

1) Galileo realized that a falling body picked up speed at a constant rate - in other words, it had constant acceleration. 
2) He also made the crucial observation that, if air resistance and buoyancy can be removed all bodies fall with the same acceleration, bodies of different weights dropped together reach the ground at the same time. (Thus, the Hammer and Feather drop experiment here)  
3) Galileo also noted that if a ball rolls without interference on a smooth horizontal surface, and friction and air resistance are removed, it will move with constant speed in a fixed direction (OR -its velocity remains constant)
   Galileo considered the motion of an object when not subject to interference as its “natural” motion. SO, natural horizontal motion is motion at constant velocity, and natural vertical motion is falling at constant acceleration.

VIDEO: The mythbusters repeated the famous "hammer and feather drop" in a vacuum chamber at NASA. Note how the feather bounces almost the same amount as the hammer upon falling. 
>

Source: http://galileo.phys.virginia.edu

Gift/Memorial Suggestions

Several of our friends have lost loved ones (human and pets) and we found that one of the best ways to honor their memory is to give to an animal charity.
What better way to recognize a life of love, than by giving another life a chance for love?
We donate to many animal rescues, but because we volunteer with
DC Weimaraner Rescue and Coast-to-Coast Dachshund Rescue, those are our 2 favorites.
Consider giving the chance of life to a dog or cat.

Great Books by our friends

Great Books by our friends
Check out these great books (yeah, Rob's are in there, too)

About us

We're two married guys who enjoy the simple things in life, especially our dogs. We volunteer for dog rescues, enjoy splitting dinners, exercising, blogging, helping friends and neighbors, ghost investigations, coffee and tea, Tudor history, weather, superheroes, comic books, mystery novels, traveling, 70s and 80s music, classic country, piano, gardening, writing books on ghosts and spirits, architecture, keeping a clean house, cooking simply, and keeping in shape. You'll find tidbits of all of these things on this blog and more.

Tom and Rob Thinking Hard!

Tom and Rob Thinking Hard!
Wondering what home project to do next

Podcast of Rob's 50 min. interview on Paranormal Filler Radio 7/13/14