Did you miss class for a few days, or do you need a review of some specific topic? These simple, bite-sized lectures from L. Viren will tell you just what you need to know...
Jon Thomas-Palmer is a classroom physics teacher who has spent a ridiculous amount of time and energy recording his classroom lectures and putting them on YouTube. If you miss a lecture or want a slightly different take on the exact same stuff that we're doing in here, this is your resource. How good is he? I sent money to the man to support what he does. Check it out!
Ms. Yau-Jong Twu is a long-time physics teacher at Eleanor Roosevelt High School in Greenbelt, Maryland, and she has created an excellent collection of physics videos. (See this one on electric fields and Gauss's Law, for example.)

The Physics Aviary
A great collection of interactive physics problem simulators to help you practice problem solving.

NASA's Apollo Archives
Inspirational photos from an inspirational period in the history of science research and exploration. Hosted by Flickr.

The Feynman Lectures on Physics
The instant classic. Required reading.
Go ahead, check it out. I'll wait!

Open Source Physics
An amazing collection of computer modeling resources for physics students and teachers. Not to be missed.

Light and Matter
Need a free online textbook to learn physics from? Ben Crowell has you covered. This is an amazing resource...

Craig Fletcher's Physics with Calculus, Volume 1 (Classical Mechanics)
Okay, I've got a website, which is kind of cool. This guy wrote a book! Good development of material, and an excellent reference for harder problems, with solutions.

Craig Fletcher's Physics with Calculus, Volume 2 (Electricity & Magnetism)
Same thing, but E & M now. Good stuff.

The Mechanical Universe... and Beyond
What's that you say? You can't get enough of the Mechanical Universe videos that we occasionally show in class? Now on YouTube...

Understanding Science: How science really works
A lovely explanation of what scientists do, and how it all works. Required reading, especially for non-scientists!

Understanding Evolution
You do know that it's not "just a theory," right?!

Dr. Richard Muller's website
I taught the man's daughter back in the day... and his work is simply inspirational. Click around his website a bit to check out some very well written physics stuff.
There are so many cool things on this site, but my favorite is Movie Physics. Check it out!

How Things Work
Got a "real life" question? Louis A. Bloomfield has "real life" answers. Required reading!

Scientific American
The premier American science journal for the layman.

Equation Sheets for the AP Tests
Equations and constants that you can use!

The Contact Patch
"Transport technology from the ground up." A really interesting special interest website with lots of information on the physics of motion, cars, trains, etc.

Dihydrogen Monoxide Information
Learn about the dangers of dihydrogen monoxide, and what you can do to protect yourself!

Visual Quantum Mechanics
...without the math!

The National Institute of Standards and Technology
You want to know about SI Units? You want to know the official time? You want to know exactly how long a meter is? Find out here!

It's almost as good as a real physics lecture--without the talking and the cool demonstrations, of course.

The Mad Sci(entist) Network
Very cool stuff here, especially the "Ask a Scientist" archives. Check it out!
Physics and Astronomy online--and these guys have a Discussion Board, too! A valuable resource.

The Perimeter Institute of Theoretical Physics - Public Lectures
Wonderful videos of public lectures offered at PI on diverse topics: Quantum entaglement, black holes, the Big Bang, the Large Hadron Collider, the search for extraterrestrial intelligence, global warming, Turing machines, the mission to Mars...

Atmospheric Optics
Rainbows? Shadows? Fog? Green flashes? Sunsets? All this and more at this amazing site.

The Royal Society's "Trailblazing"
The Royal Society--the UK's national academy of science--has just launched this online, interactive timeline to commemorate the Royal Society's 350th anniversary in 2010. Amazing.

Naked Scientists
Funny. Cool. Informative. Check it out.

Falstad's Math & Physics Applets
Physics is so much easier to understand when you see Java-based motion.

The Physics of Angry Birds
Yup... there are physics even in video games. Nice analysis in Wired magazine.

AP Physics Lectures - A nice collection of links to YouTube videos covering the major topics in the AP Physics C series.


Lift and Wings, another awesome lesson from Sixty Symbols.

Ten Lessons of an MIT Education, by Gian-Carlo Rota. In case you were thinking of going to MIT!

Road Runner Physics
Because who doesn't love the Road Runner? (Except for Wile E. Coyote, of course.)

Arbor Scientific Cool Stuff Videos
For Science teachers only! (Just kidding. Go check it out. There's some pretty cool stuff here!)

The Never-Ending Conundrums of Classical Physics
We don't have it all figured out just yet...

How Far Are You Flung When an Amusement Park Ride Goes Terribly Wrong?
If you find yourself missing physics class you can always find a problem to solve.

The Best, Most Stunning, Jaw-Dropping Space Station Time-Lapses of All Time, Ever
The title says it all. These are stunning.

Great Ideas Come When Your Aren't Trying
This is why you need to allow plenty of time to complete big assignments that require creative thinking.

How to Study Physics
By David R. Hubin and Charles Riddell. The secrets of physics-studying success, online!

The Top 25 Questions in Science
There are so many things that we still don't know! Here's a list of perhaps the most interesting...

How to Google the Internet
You can find almost anything you need, but you have to know how to look. Essential how-to reading from the essential search engine.

Kilogram question weighs on world
How much is a kilogram, really? LA Times news story reveals the crisis.

13 Things That Don't Make Sense
New Scientist goes over some of the biggest questions that science would like to be able to answer, but hasn't managed to yet

Password Security
It's more important than ever. Learn how to protect yourself now!

What good is physics?
Theoretical physics doesn't have any real-life applications...or does it?

Research finds least competent people have most confidence in abilities
Are you confident, or incompetent? You may be both!

Chat & Instant Message Abbreviations
What the heck does "ttfn" mean, anyway?

School Success Begins at Home
It turns out that good parenting is important--who knew??! :)

Raise Your GPA
A blog entry with some reasonable ideas that just make sense

Video Explains What a Capacitor Is
...and how to make one

Sixty Symbols of Physics & Astronomy
Videos! Fascinating!

What Fast Looks Like
I do not want to be any of these people...

High school students capture photos of earth from home-built space vehicle
Who says high school physics has to be boring?

STS-129 Ascent Video Highlights
12 minutes of shuttle launching heaven. The footage assembled here is incredible.

NBC Science of the Olympics
Very cool, in a conceptual way.

It's a Math, Math World
A recommendation of several types of math-related books.

I got a C on my Organic Chemistry (AP Physics?) Exam... what should I do?
AP Science courses are hard. Here's how to get better at preparing for them.

Best Physics Sites on the Web
Some truly amazing stuff here. Check it out!

Gymnastics in a rotating reference frame
I don't understand it, but it's pretty cool!