The August 21 eclipse is being commemorated by the US Postal Service with a new stamp printed with thermochromic ink; when you rub the stamp the image transforms from an image of the 2006 total eclipse as shot from Jalu, Libya, to a photo of the full moon, both taken by Fred Espenak, aka Mr. Eclipse, of Portal, AZ.
In the first U.S. stamp application of thermochromic ink, the Total Solar Eclipse stamps will reveal a second image. Using the body heat of your thumb or fingers and rubbing the eclipse image will reveal an underlying image of the Moon (Espenak also took the photograph of the Full Moon). The image reverts back to the eclipse once it cools.
Thermochromic inks are vulnerable to UV light and should be kept out of direct sunlight as much as possible to preserve this special effect. To help ensure longevity, the Postal Service will be offering a special envelope to hold and protect the stamp pane for a nominal fee.
Total Eclipse of the Sun to be commemorated on a Forever Stamp
Roguelike games (previously) are "a subgenre of role-playing video game characterized by a dungeon crawl through procedurally generated levels, turn-based gameplay, tile-based graphics, and permanent death of the player character" (Wikipedia).
From 6PM-730PM this Thursday, May 23, I'm presenting at the Exposition Park Library (Dr. Mary McLeod Bethune Regional Library, 3900 S Western Ave, Los Angeles, CA 90062) on the problems of Big Tech and how the problems of monopolization (in tech and every other industry) is supercharged by the commercial surveillance industry -- and what […]
Bernie Sanders has released A Thurgood Marshall Plan for Public Education, a detailed and bold suite of public education reforms reminiscent of the kinds of policy planks being laid down regularly by rival candidate Elizabeth Warren (I'm a donor to both Sanders' and Warren's campaigns).
Does your gaming setup need an upgrade? No need to wait for Christmas. We’ve rounded up the latest tech accessories for your favorite video game platforms. All of them are already sale priced, but you can knock an additional 15% off the final price for Memorial Day by using the online code WEEKEND15. Audeze Mobius […]
Raspberry Pi is one of the world’s most versatile open-source computers. Alexa is a home automation hub with limitless potential. Together, they’re a dream team for ambitious makers, opening the door to everything from automatic lights to voice-controlled robots. Learning Raspberry Pi is meant to be relatively easy for newbies, but its applications with Alexa […]
Heads up: The clock is winding down on a free-entry contest to win not only one of the best smartphones on the market but a handy pair of earbuds. A simple sign-up is all you need to be eligible to win a 256 GB iPhone XS Max, along with AirPods. And while “free” is tough […]