Skip to main content

Building A Spinning Moiré Effect Lamp

A concise, comical explanation of Moiré patterns, via XKCD.

Moiré patterns are interference patterns created when grids of different size or alignment are placed over each other. You’ve probably seen these when photographing a TV screen or looking through a pair of windows screens at the same time. [ChrysN] put the effect to work with this spinning Moiré lamp build.

It’s a build that can be achieved with scrap-bin components. An LED-encrusted PC cooling fan is used as the base of the lamp, fitted with Sugru bumpers to hold a cheap glass vase. A line pattern is then printed on to paper, rolled into a cylinder, and slid on to the fan to spin with the blades, inside the vase. Another line pattern is then printed on to a transparency (a printable transparent sheet for those who don’t remember overhead projectors) and slid around the outside of the vase. When powered up, the LEDs glow, and the fan spins, creating a hypnotizing moving moiré pattern.

It’s a simple but visually captivating build, and one that should keep you up at night thanks to the blue LEDs. Moiré patterns can do so much more though – they’re even put to work guiding ships. Video after the break.



from Hackaday https://ift.tt/2Q3kNUB
Labels:

Comments

Post a Comment

Popular posts from this blog

Bill Gates steps down from Microsoft’s board to focus on philanthropy

In an announcement on Friday, Microsoft revealed that company co-founder Bill Gates has decided to step down from his role on its Board of Directors in order to focus on his philanthropic efforts at the Bill & Melinda Gates Foundation. This is Gate’s biggest change to his role at Microsoft since stepping down as company chairman in February 2014. According … Continue reading from SlashGear https://ift.tt/2We90Gu
Post a Comment
Read more

Uber claims top spot in Indian ride-hailing market

Uber facilitated 14 million rides a week in India last year, the American ride-hailing firm said as it claimed the tentpole position in the key overseas market. In a report  (PDF) published on the sidelines of its quarterly earnings Thursday afternoon , Uber said that it commanded over 50% of the ride-hailing market in India — among some other regions — and was the category leader. The publicly listed company cited its internal estimations for the claim, it said. In comparison, Uber handled 11 million rides a week in India in 2018, a spokesperson told TechCrunch. The revelation is especially interesting, since both Uber and its chief local rival Ola have tended to avoid talks about the number of rides they serve in India. In a 2018 blog post , Ola revealed that its platform “moves over two million people every day.” A spokesperson for the Indian startup, which like Uber counts SoftBank as an investor, declined to reveal the new figures, but issued a statement in which it ...
Post a Comment
Read more

Epic is probing an annoying Fortnite bug that causes stuck players

Epic Games has acknowledged reports of a frustrating Fortnite bug that is causing some players to become stuck in place, unable to move their character from the spot where it freezes. This same general issue is also causing issues in which players can move but are unable to access their backpack inventory, leaving them without most of their gear. Epic … Continue reading from SlashGear https://ift.tt/2Qqesmx
Post a Comment
Read more