Posted by
susie on Nov 24, 2014 in
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An object at rest stays at rest, and object in motion tends to stay in motion. This is inertia, defined famously by Isaac Newton in his First Law of Motion.
Download MP3:[Ep. 356: Rotational Inertia]
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Put that pedal to the metal and accelerate! It’s not just velocity, but a change in velocity. Let’s take a look at acceleration, how you measure it, and how Einstein changed our understanding of this exciting activity.
Ep. 314:...
Posted by
Nancy on Aug 7, 2013 in
Astronomy,
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Why don’t we have insects the size of horses? Why do bubbles form spheres? Why does it take so much energy to broadcast to every star? Let’s take a look at some non-linear mathematical relationships and see how they impact your day-to-day...
Posted by
Joe on Sep 10, 2012 in
Forces,
Physics |
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An object at rest tends to stay at rest. An object in motion tends to stay in motion. Isaac Newton dismantled the traditional idea that objects would tend to slow down over time, and described the concept of inertia: the amount an object will resist changes in its motion.
Posted by
Joe on Jul 10, 2012 in
Forces,
Physics |
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Our entire civilization depends on energy: getting it, converting it, burning it, and conserving it. But how do physicists think about energy? How do they measure and quantify it. And what is energy's special relationship with mass?
Posted by
admin on Dec 16, 2009 in
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You know how a police siren changes sound when it passes by you? That’s the doppler effect. It works for sound waves and it works for light waves. Astronomers use the doppler effect to study the motion of objects across the Universe, from nearby...
