As a compliment to this morning’s post about making “light orbs,” here’s a second Flickr tutorial, from user tdub303, about making and using “light stencils” in your long-exposure light photography. Basically, the stencil is cut out of a light-tight box holding a camera flash, which is fired off to illuminate the design and record it on the exposure.
Original, beautiful, simple. Easy to remake. From designer Sarah Dayo. She calls it “Glimpse.” Reported dimensions are 77×36″. [via NOTCOT[]
This is the PT54 PhlatLight from Luminus Devices, Inc. It’s intended for use in portable video projectors. More photos of the setup here. [via Hacked Gadgets]
By George Hart for the Museum of Mathematics Making geometric structures from commonly-found objects can result in some interesting effects. Here, sixty bicycle reflectors are joined into a spherical geometric construction by Nick Sayers. To connect them, he drilled four holes in each and fastened them together with small cable ties. Another example is this […]
When 17 year old Hayden Parker says he’s a backyard scientist, he means it literally. He’s converted the family backyard BBQ area into an outdoor chemistry lab where he shoots videos of his experiments. It’s a little harrowing watching him do some of these procedures, such as synthesizing nitric acid, and making some critical mistakes […]
Science bad boy Theo Gray shows you how to create lightning bolts in a piece of acrylic. OK, so you need the juice of a five-million-volt particle accelerator to get the effect seen here (via the Kent State Neo Beam’s Dynamitron): With the Dynamitron – rented for the day – adjusted to around three million […]
This tree is from an analysis of small subunit rRNA sequences sampled
from about 3,000 species from throughout the Tree of Life. The species were chosen based on their availability, but we attempted to include most of the major groups, sampled
very roughly in proportion to the number of known species in each group (although many
groups remain over- or under-represented). The number of species represented is approximately the square-root of the number of species thought to exist on Earth
(i.e., three thousand out of an estimated nine million species), or about 0.18% of the 1.7 million species that have been formally described and named.
