I needed a new super bright flashlight, this one by Outlite does the trick! It is super bright, and water resistant for use in the rain!
Switching between modes is done with a half press of the power button. Bright is bright! Certainly throws out more light than my lost Surefire 600 lumen lamp. It is a bargain for $14. I am sure it will soon be in a secret pile of flashlights my daughter or dogs are hoarding.
If you do not have an 18650 battery around, that may present a hidden expense! Batteries are not included. I have a few for camera flashes, so I didn't mind. The torch has run for 5 weeks without needing a recharge.
Outlite 501B LED 900 Lumen Handheld Flashlight via Amazon Read the rest
interesting periodic patterns
Don't watch if you're sensitive to strobes, but otherwise check out these
which appear in strobe-lit materials excited by sound waves. Read the rest
The UK's National Media Museum currently hosts a Festival of Light installation by Liz West. An Additive Mix fills the room with white light, teaching visitors about the concept of additive color.
Liz will be at the museum in person for free family talks on July 23.
• Light Fantastic: Adventures in the Science of Light (via)
Read the rest
Mike Harrison has been experimenting with tiny flexible LED filaments found in LED bulbs that mimic incandescent bulbs. He came up with this cool light cube and a very bright clock display. Read the rest
The Eiffel Tower opened to the public on this day in 1899, but it was described as "a simple and useless dark peak in the Paris night sky" until the owners hired engineer Fernand Jacopozzi to light it in spectacular fashion in 1925. Read the rest
One of my favorite crowdfunded projects is the beautiful Trioh rechargeable 3-in-1 light, which the makers claim is the "world's most beautiful flashlight." Read the rest
NASA scientists, at the American Geophysical Union’s annual meeting, revealed images from space of humanity—and our wonderful cultural behaviors.
My friend Austin took this photograph last week, looking out his office window near the Metrodome in downtown Minneapolis. That flare in the distance isn't Photoshop. Nor is it the nuclear annihilation of St. Paul. Instead, it's a sun dog — an atmospheric phenomenon that happens when light from the Sun is refracted off of ice crystals in the air. The light gets bent as it passes through the crystals and we see the bright flash of a "false sun" to the side of the actual Sun. The same process can also form rings around the Sun. Whether you get a halo or a sun dog depends on which way the ice crystals are oriented in relation to you. Read the rest
The physics blog Skulls in the Stars has answers to your rainbow-related questions
. Among the fascinating things we learn here — each color in a rainbow represents the light reflected by a separate group of raindrops; skydivers can see circular rainbows; and the famous double rainbow
happens when light bounces off the inside of a raindrop not just once ... but twice. Read the rest
Nacho Guzman demonstrates how much a face appears to change with differing lighting positions, in a teaser for a forthcoming music video from OPALE. Read the rest
Pretty much everyone — including, probably, you — thought that the 2012 Nobel Prize in physics would go to the people who discovered evidence of a particle that meets the description of the theoretical Higgs Boson.
But, it didn't.
Instead, the winners are Serge Haroche and David Wineland, two physicists whose work is all about the way that photons — the tiniest pieces of light, which simultaneously behave as both shifting waves and packaged particles — interact with everything else in the Universe.
I really dig this video put together by Brady Haran of Sixty Symbols, because it captures both the surprise associated with today's announcement (turns out, a lot of physicists thought the Higgs Boson would win, too) and does a good job of explaining what Haroche and Wineland do, and why it's important.
Quote of the day: "Have you tried to capture a single atom?" Read the rest
I stumbled across this randomly on YouTube today and had to share. The first 3/4 of the video are a chemistry experiment breakdown of what goes into a glow stick and what each of those ingredients is meant to do. But what makes me LOVE it is that, at the end, all of this coalesces into a fine explanation of the difference between light-absorbing dyes and fluorescent dyes. Come for the glow-stick "how to", stay for the better understanding of how light works and how it influences what you see!
Video Link Read the rest
Last June, researchers from the Hong Kong University of Science and Technology published the results of an experiment that proved that light does not move faster than light—specifically, that single photons can't move faster than the official speed of light under certain conditions.
Today, Skulls in the Stars—the nom de Internet of a UNC Charlotte physics professor—has a really great blog post up about this paper. It's very much worth a read. After all, this was basically a test to double check something we were already pretty sure was true. And what's the benefit to proving something you already knew?
A big part of why I'm recommending this post is because Skulls in the Stars does a good job of explaining some tangly optical physics in a way that is quite clear and should make good sense even if you don't have a deep background in this stuff. If you follow along, you'll come away with a good idea of why this particular study matters, and with a deeper understanding of the speed of light itself.
Read the rest
Let’s talk about how we measure the speed of an object first. If we’re looking at the motion of a rigid object, like a speeding car or a thrown baseball, the speed can be determined simply by measuring how much time it takes for an object to travel a distance. The speed is simply the distance divided by the time
There’s a small subtlety to this definition: cars and baseballs are extended objects!