http://www.davidcolarusso.com/blog/ Quasi-weekly answerers to science questions, along with brief lessons and ideas for teachers and students. iWeb 1.1.2 http://www.davidcolarusso.com/explainer/title.png http://www.davidcolarusso.com/blog/ 60 Quasi-weekly answerers to science questions, along with brief lessons and ideas for teachers and students. Quasi-weekly answerers to science questions, along with brief lessons and ideas for teachers and students. http://www.davidcolarusso.com/blog/?p=150 http://www.davidcolarusso.com/blog/?p=150 Wed, 12 Aug 2008 12:00:00 +0000 Now you can find out where you are even if you don't have GPS. Learn how to find south along with your latitude and longitude using only a few household items. 00:05:00 Now you can find out where you are even if you don't have GPS. Learn how to find south along with your latitude and longitude using only a few household items. Now you can find out where you are even if you don't have GPS. Learn how to find south along with your latitude and longitude using only a few household items. http://www.davidcolarusso.com/blog/?p=41 http://www.davidcolarusso.com/blog/?p=41 Sat, 21 Apr 2007 12:00:00 +0000 Last week we covered the two postulates of special relativity, and next week we'll use geometry to derive some of its consequences, but first we need to learn some nomenclature. It's not exciting, but it will prove helpful in the long run. 00:03:07 Last week we covered the two postulates of special relativity, and next week we'll use geometry to derive some of its consequences, but first we need to learn some nomenclature. It's not exciting, but it will prove helpful in the long run. Last week we covered the two postulates of special relativity, and next week we'll use geometry to derive some of its consequences, but first we need to learn some nomenclature. It's not exciting, but it will prove helpful in the long run. http://www.davidcolarusso.com/blog/?p=39 http://www.davidcolarusso.com/blog/?p=39 Wed, 11 Apr 2007 12:00:00 +0000 The bizarre consequences of special relativity arise from two postulates, two things which once accepted lead to Einstein's space-time. In this series of five episodes, we will introduce and build upon these postulates to derive the consequences of special relativity. 00:07:12 The bizarre consequences of special relativity arise from two postulates, two things which once accepted lead to Einstein's space-time. In this series of five episodes, we will introduce and build upon these postulates to derive the consequences of special relativity. The bizarre consequences of special relativity arise from two postulates, two things which once accepted lead to Einstein's space-time. In this series of five episodes, we will introduce and build upon these postulates to derive the consequences of special relativity. http://www.davidcolarusso.com/blog/?p=33 http://www.davidcolarusso.com/blog/?p=33 Mon, 2 Apr 2007 12:00:00 +0000 The quadrant is a simple tool for measuring the altitude (angle) of an object above the horizon. This episode makes use of a printable template found at: http://www.davidcolarusso.com/handouts/quadrant.pdf 00:01:50 The quadrant is a simple tool for measuring the altitude (angle) of an object above the horizon. This episode makes use of a printable template found at: http://www.davidcolarusso.com/handouts/quadrant.pdf The quadrant is a simple tool for measuring the altitude (angle) of an object above the horizon. This episode makes use of a printable template found at: http://www.davidcolarusso.com/handouts/quadrant.pdf http://www.davidcolarusso.com/blog/?p=36 http://www.davidcolarusso.com/blog/?p=36 Sun, 25 Mar 2007 12:00:00 +0000 Einstein may have believed God doesn't play dice, but God need not conform to Einstein's beliefs. This piece explores the phenomenon of quantum mechanical tunneling whose explanation requires us to accept the reality of quantum mechanics. It's not a trick; it's reality. 00:04:12 Einstein may have believed God doesn't play dice, but God need not conform to Einstein's beliefs. This piece explores the phenomenon of quantum mechanical tunneling whose explanation requires us to accept the reality of quantum mechanics. It's not a trick; it's reality. Einstein may have believed God doesn't play dice, but God need not conform to Einstein's beliefs. This piece explores the phenomenon of quantum mechanical tunneling whose explanation requires us to accept the reality of quantum mechanics. It's not a trick; it's reality. http://www.davidcolarusso.com/blog/?p=32 http://www.davidcolarusso.com/blog/?p=32 Tue, 20 Mar 2007 12:00:00 +0000 In the movie Speed a bus is forced to jump an unfinished portion of highway to avoid setting off a bomb on the bus rigged to explode should it go below fifty miles an hour. Of course, they make it, but we want to know if this could really happen. 00:04:02 In the movie Speed a bus is forced to jump an unfinished portion of highway to avoid setting off a bomb on the bus rigged to explode should it go below fifty miles an hour. Of course, they make it, but we want to know if this could really happen. In the movie Speed a bus is forced to jump an unfinished portion of highway to avoid setting off a bomb on the bus rigged to explode should it go below fifty miles an hour. Of course, they make it, but we want to know if this could really happen. http://www.davidcolarusso.com/blog/?p=28 http://www.davidcolarusso.com/blog/?p=28 Sun, 10 Mar 2007 12:00:00 +0000 What do bicycle wheels, figure skaters, and exploding stars have in common? That's right, angular momentum. 00:02:18 What do bicycle wheels, figure skaters, and exploding stars have in common? That's right, angular momentum. What do bicycle wheels, figure skaters, and exploding stars have in common? That's right, angular momentum. http://www.davidcolarusso.com/blog/?p=24 http://www.davidcolarusso.com/blog/?p=24 Sat, 3 Mar 2007 12:00:00 +0000 A fast-paced time-laps demo of how to build your own electric motor. 00:02:17 A fast-paced time-laps demo of how to build your own electric motor. A fast-paced time-laps demo of how to build your own electric motor. http://www.davidcolarusso.com/blog/?p=23 http://www.davidcolarusso.com/blog/?p=23 Sun, 25 Feb 2007 12:00:00 +0000 Electricity and magnetism are intimately connected. Explore their relationship in this short explanation of the hand rules. 00:03:51 Electricity and magnetism are intimately connected. Explore their relationship in this short explanation of hand rules. Electricity and magnetism are intimately connected. Explore their relationship in this short explanation of hand rules. http://www.davidcolarusso.com/blog/?p=22 http://www.davidcolarusso.com/blog/?p=22 Sun, 18 Feb 2007 00:00:00 +0000 In the inaugural episode of the Tabletop Explainer, examine the magnetic field. What is is and what is it good for? 00:02:30 In the inaugural episode of the Tabletop Explainer, examine the magnetic field. What is is and what is it good for? In the inaugural episode of the Tabletop Explainer, examine the magnetic field. What is is and what is it good for?