Tim L's Enrolled Lessons
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6 minPhysics lesson4 CQ
What the heck is entropy? You've heard a dozen different explanations. Let's review them and understand the concept of entropy in this basic physics lesson.
What the heck is entropy? You've heard a dozen different explanations. Let's review them and understand the concept of entropy in this basic physics lesson.
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5 minScience lesson3 CQ
Learn about the Crab Nebula (catalogue designations M1, NGC 1952, Taurus A)—a supernova remnant and pulsar wind nebula in the constellation of Taurus.
with AstronomicLearn about the Crab Nebula (catalogue designations M1, NGC 1952, Taurus A)—a supernova remnant and pulsar wind nebula in the constellation of Taurus.
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3 minScience lesson2 CQ
Discover why Jupiter is called a failed star, which characteristics it share with the Sun, and what the key difference is between stars and planets.
with AstronomicDiscover why Jupiter is called a failed star, which characteristics it share with the Sun, and what the key difference is between stars and planets.
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6 minPhysics lesson4 CQ
In this lesson, learn about gravity, or gravitation—a natural phenomenon by which all things with mass are brought toward (or gravitate toward) one another.
with AstronomicIn this lesson, learn about gravity, or gravitation—a natural phenomenon by which all things with mass are brought toward (or gravitate toward) one another.
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17 minFREENerdy CurioFree9 CQ
The esteemed filmmaker and naturalist is still calling attention to wonder—and peril—in the natural world.
with Science FridayThe esteemed filmmaker and naturalist is still calling attention to wonder—and peril—in the natural world.
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2 minFREENight Photography lessonFree2 CQ
Finally the secrets of night photography have been unlocked! From an iPhone to a DSLR, start learning how to take pictures with your favorite camera after dusk.
with Neil CreekFinally the secrets of night photography have been unlocked! From an iPhone to a DSLR, start learning how to take pictures with your favorite camera after dusk.
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4 minNight Photography lesson3 CQ
Taking photos at night doesn’t have to be a tricky experience - watch this lesson to discover the challenges and opportunities of night-time photography.
with Neil CreekTaking photos at night doesn’t have to be a tricky experience - watch this lesson to discover the challenges and opportunities of night-time photography.
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8 minPhotography lesson5 CQ
Interested in night photography? This lesson covers what you need to know about your camera’s ancillary equipment: flashes, tripods, and more.
with Neil CreekInterested in night photography? This lesson covers what you need to know about your camera’s ancillary equipment: flashes, tripods, and more.
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17 minLight & Exposure lesson9 CQ
Get to know your camera! This lesson on night photography shows you how aperture, shutter speed, and ISO interact to capture various types of light.
with Neil CreekGet to know your camera! This lesson on night photography shows you how aperture, shutter speed, and ISO interact to capture various types of light.
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14 minPhotography lesson8 CQ
Histograms visualize useful data about photograph exposure. Learn how to make the most of them with your camera and post-processing software in this lesson.
with Neil CreekHistograms visualize useful data about photograph exposure. Learn how to make the most of them with your camera and post-processing software in this lesson.