Japanese scientists invent floating ‘firefly’ light

Researchers have already made a prototype “micro-size reading light,” which roams above a book. (Courtesy University of Tokyo)
Updated 23 February 2018
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Japanese scientists invent floating ‘firefly’ light

TOKYO: Japanese engineering researchers say they have created a tiny electronic light the size of a firefly which rides waves of ultrasound, and could eventually figure in applications ranging from moving displays to projection mapping.
Named Luciola for its resemblance to the firefly, the featherweight levitating particle weighs 16.2 mg, has a diameter of 3.5 mm (0.14 inch), and emits a red glimmer that can just about illuminate text.
But its minuscule size belies the power of the 285 microspeakers emitting ultrasonic waves that hold up the light, and have a frequency inaudible to the human ear, allowing Luciola to operate in apparent total silence.
It took two years for Luciola to get this far, said circuit design specialist Makoto Takamiya, a member of the Kawahara Universal Information Network Project that developed the device.
“Ultimately, my hope is that such tiny objects will have smartphone capabilities and be built to float about helping us in our everyday lives in smarter ways,” said the University of Tokyo professor, who hopes it will be commercially viable in five to 10 years.
The developers expect Luciola to find applications in the so-called Internet of Things, in which regular objects, such as cars, or domestic appliances such as air-conditioners, are connected to networks to send and receive data.
Equipped with movement or temperature sensors, Luciola could fly to such objects to deliver a message or help to make moving displays with multiple lights that can detect the presence of humans, or participate in futuristic projection mapping events.
The Kawahara Universal Information Network Project is a government-funded program that is part of the Japan Science and Technology Agency and explores advances in information and communication technology.


SpaceX’s first private passenger is Japanese fashion magnate Maezawa

This artist's illustration courtesy of SpaceX obtained September 17, 2018, shows the SpaceX BFR(Big Falcon Rocket)rocket passenger spacecraft. SpaceX is to reveal on September 17, 2018 the identity of the first person it plans to transport around the Moon in an ambitious project financed entirely by its eccentric CEO Elon Musk. (AFP)
Updated 18 September 2018
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SpaceX’s first private passenger is Japanese fashion magnate Maezawa

  • SpaceX in February transfixed a global audience with the successful test launch of its Falcon Heavy, the most powerful operational rocket in the world
  • SpaceX has already upended the space industry with its relatively low-cost reusable Falcon 9 rockets

HAWTHORNE, California: SpaceX, Elon Musk’s space transportation company, on Monday named its first private passenger as Japanese businessman Yusaku Maezawa, the founder and chief executive of online fashion retailer Zozo.
A former drummer in a punk band, billionaire Maezawa will will take a trip around the moon aboard its forthcoming Big Falcon Rocket spaceship, taking the race to commercialize space travel to new heights.
The first passenger to travel to the moon since the United States’ Apollo missions ended in 1972, Maezawa’s identity was revealed at an event Monday evening at the company’s headquarters and rocket factory in the Los Angeles suburb of Hawthorne.
In moves typical of his publicity-seeking style, Musk, who is also the billionaire chief executive of electric car maker Tesla Inc, had previously teased a few tantalizing details about the trip and the passenger’s identity, but left major questions unanswered.
On Thursday, Musk tweeted a picture of a Japanese flag. He followed that up on Sunday with tweets showing new artist renderings of the Big Falcon Rocket, or BFR, the super heavy-lift launch vehicle that Musk promises will shuttle the passenger to the moon and eventually fly humans and cargo to Mars, using the hashtag #OccupyMars.
While the BFR has not been built yet, Musk has said he wants the rocket to be ready for an unpiloted trip to Mars in 2022, with a crewed flight in 2024, though his ambitious production targets have been known to slip.
SpaceX plans a lunar orbit mission. It was not clear how much Maezawa paid for the trip.
Maezawa made his fortune by founding the wildly popular shopping site Zozotown. His company Zozo, officially called Start Today Co. Ltd, also offers a made-to-measure service using a polka dot bodysuit, the Zozosuit..
With SpaceX, Amazon.com founder Jeff Bezos’ Blue Origin and entrepreneur Richard Branson’s Virgin Galactic battling it out to launch private-sector spacecraft, the SpaceX passenger will join a growing list of celebrities and the ultra-rich who have secured seats on flights offered on the under-development vessels.
Those who have signed up to fly on Virgin Galactic sub-orbital missions include actor Leonardo DiCaprio and pop star Justin Bieber. A 90-minute flight costs $250,000.
Short sightseeing trips to space aboard Blue Origin’s New Shepard rocket are likely to cost around $200,000 to $300,000, at least to start, Reuters reported in July.
SpaceX has already upended the space industry with its relatively low-cost reusable Falcon 9 rockets. The company has completed more than 50 successful Falcon launches and snagged billions of dollars’ worth of contracts, including deals with NASA and the US Department of Defense.
SpaceX in February transfixed a global audience with the successful test launch of its Falcon Heavy, the most powerful operational rocket in the world.
SpaceX previously announced plans to eventually use Falcon Heavy to launch paying space tourists on a trip around the moon, but Musk said in February he was inclined to reserve that mission for the BFR.