Monday, 29 June 2015

Solar Impulse 2 leaves Nagoya, Japan, for Hawaii


Credit: Solar Impulse

The story so far:

09 March 2015 — left Abu Dhabi on the first solar-powered round-the-world flight
http://hhg2tech.blogspot.com.au/2015/03/solar-powered-round-world-flight.html

21 April 2015 — a series of relatively short flights lead to a landing in Nanjing, China

30 May 2015 — after waiting in Nanjing for suitable weather, took off for Hawaii — expected flight time, at least 120 hours (5 days & nights), non-stop. A change in the weather forced a landing in Nagoya, Japan

28 June 2015, 18:03 UTC — Solar Impulse 2 took off from Nagoya. Next stop Hawaii.

29 June 2015, 03:17 UTC — passed the point of no return

http://www.euronews.com/2015/06/29/heading-for-hawaii-solar-impulse-ii-takes-off-for-the-most-risky-leg-of-its/ / Swiss pilot pilots first ever attempt fly around the world propelled the Sun André Borschberg compatriot Bertrand Piccard take turns piloting single seater seat Solar Impulse 2 21,747 miles 35,000 km kilometre 12 legs including gruelling five- to six-day stints across the Atlantic Pacific oceans entire journey will take five months Borschberg took the controls takeoff take off take-off Al-Bateen executive airport Abu Dhabi early on Monday first destination Muscat in Oman pilots roughly 250 hours each inside narrow cockpit no oxygen temperature control temperatures outside range between -40 degrees C to 40°C degrees Celsius falling asleep flight need constant attention Piccard Borschberg survive 20-minute naps every two to four hours pilots will practise yoga stave off the physical discomfort remaining confined seat for days at a time Borschberg biggest challenge maintaining concentration Piccard psychiatrist team 1999 first circumnavigated globe non-stop balloon taught techniques of self-hypnosis meditation maintain concentration time duration in the present moment the only way is to be present almost a spiritual experience entire journey circumnavigating Earth in a family car aircraft weighs the same as a Volvo sedan comparable speeds SI2 top speed 87m/h 140km/h pilots conserve battery power limiting plane half cockpit only slightly larger average car contain life support systems food oxygen supplies reclining pilot’s seat triples bed chair toilet fly both day and night no fuel powered by 17,000 solar panels set on its wings wider Boeing 747’s fuselage 633kg bank of lithium batteries quarter weight store energy run motors overnight journey early days intercontinental flight enormous speed range jet engines Qantas fly Kangaroo Route Sydney to London hopping Darwin Singapore Kolkata Karachi Cairo Tripoli en route Borschberg success Solar Impulse project first solar-powered plane fly through the night first to fly between two continents primitive step toward zero-carbon jumbo combustion fossil fuels dominated powered flight 19th century dirigible aviation burns the most carbon per passenger per kilometre of any mode of mass-transport and, despite efforts to limit emissions, remains the fastest growing anthropogenic source of greenhouse gases sector climate change toughest major emissions source to decarbonise solar flight seeks remains decades away Wright Brothers Charles Lindbergh deputy editor Aerospace magazine Bill Read solar flight commercial flights solar cells generate power fly Solar Impulse fly using solar power constructed very light weight light-weight lightweight huge wingspan solar cell technology power source aircraft advances project real-world uses today fly Sun day and night build an aircraft extremely energy efficient technologies energy efficiency used in your home your car appliances four motors power aircraft generate heat energy efficiency single cheapest way reduce carbon emissions across the world technologies challenge energy environment pollution natural resources /

Lexus hoverboard — No, we’re not selling this, but can we interest you in a car?


Lexus hoverboard — hint: that's condensation, not smoke — liquid nitrogen inside (-321 degrees Farenheit, -196 Celcius)
Credit: Lexus/Wired

Scepticism expressed in my previous post about the Lexus hoverboard has received some support:
http://www.wired.com/2015/06/lexus-hoverboard-slide/?mbid=nl_062615

Still no evidence that it can support more than its own weight.

More about how it works


Quantum levitation race track
/ Lexus short teaser video Slide hoverboard Back to the Future II dreams science fiction how it works hoverboard hype skepticism bamboo carbon fiber skateboard, emitting wisps condensation smoke levitates concrete surface foot approaches mount ride cut away convincing hoverboard hoax Funny or Die promotion BTTFII Lexus device magnetic levitation lift-off levitating tease floating on top of concrete Mike Norman Director Materials Science Division Argonne National Lab surface trickery magnets iron steel mixed in just underneath concrete Lexus hoverboard how it works magnets physics Lexus hoverboard superconductors magnets repel the force of gravity fancy skateboard rider above the ground Hendo hoverboard Kickstarter project physics Lexus superconductor magnetic field superconductor oscillating magnetic field Eric Palm Deputy Laboratory Director FSU’s National High Magnetic Field Laboratory Meissner effect magnetic field near superconductor induces electric current superconductor creates image magnetic field other side superconductor create current superconductor currents don’t die away don’t need oscillating magnetic fields magnet levitates above superconductor superconductor levitates above a magnet technical maglev train similar principles achieve speeds Shanghai’s Transrapid over 300mph superconductor locked in a magnetic field wisps of smoke condensation Lexus board liquid nitrogen cooling the superconductors below transition temperature becomes superconducting cold -321 degrees Farenheit very cold liquid nitrogen byproduct of the steel industry pretty inexpensive liquid nitrogen runs out superconductors warm up interaction between superconductor magnet repels the force of gravity allows levitate levitation concrete video something magnetic human-bearing board really is like you’re floating ridden the Lexus hoverboard Back to the Future Lexus spokesperson Maurice Durand mass produce a hoverboard SLIDE part marketing campaign unannounced car surprise viral sensation Lexus hoverboard scientific breakthroughs not-quite-concrete maglev hoverboard paved with magnets levitation hovering /

Sunday, 28 June 2015

Free photography school


Credit: Danny Zappa/iPhone Photography School

It’s called iPhone Photography School, but don’t let the title put you off if you don’t own an idevice, or even if most of your photography is with DSLRs & a truckload of interchangeable lenses. Everybody uses a phone camera from time-to-time, & the principles are the same.

Recently there was an article on travel photography:
http://iphonephotographyschool.com/travel/

Home page:
http://iphonephotographyschool.com/

And here are some examples of what can be done with just a phone camera:
http://hhg2tech.blogspot.com.au/2014/12/iphone-photographer.html / photograph photography picture pictures photographer chase light art print landscape misty work document documented process behind the lens trip trips expansive expanse Alaska wild wilds life on the road wilderness nature iphotographer hegely talented makes a living iPhone photos living on the road travelling documented live Portland Oregon central coast California shooting pictures Instagram share platform fun see light and composition differently hobby income nomadic lifestyle sell selling licenses images iStockphoto Stocksy mobile native camera app VSCO Cam lock white balance Average Camera Pro slow shutter water post processing post-processing experiment light composition style develop complete solitude Angel Dorr digital image planning a vacation what camera to take carrying bulky camera equipment planning weekend city break family vacation round the world adventure iPhone phone camera perfect camera for your trip travel photography document your journey experiences share family friends social media followers image resolution quality higher DSLR high-end camera portability convenience compact lightweight taking photos quickly discreetly carrying no need to take any extra equipment carry a heavy camera tripod multiple lenses target for theft hide carrying an expensive piece of kit equipment problem traditional camera changing settings miss the once in a lifetime shot travel photography document the story locations you visit time that you spend there large digital camera your next vacation best travel camera basic steps prepare for your trip destination stunning unique travel photos research your destination use Instagram community cliché cliche shots visiting tourist spots travel traveling return home interesting unique shots popular travel destinations shoot portraits local people yourself traveling companion subject focal point capture small details ask permission cultural sensitivity tell a story document entire journey fill camera roll take as many photos as you possibly can delete failures burst mode take the picture /

Saturday, 27 June 2015

Panda ant


Credit: DrSarahJensen/Flickr/Featured Creature

Panda ants are members of the family Mutillidae, a family of wasps, commonly known as velvet ants, in which the females are flightless & resemble large, hairy ants. Colour is most commonly bright scarlet or orange. Other colours include black, white, silver & gold, or as in the panda ant, black & white. Panda ants are native to Chile.



Velvet ants are also known as, “cow killer ants”, as anecdote has it that they are able to bring down a cow with relatively few stings.



http://www.ourbreathingplanet.com/panda-ant/

http://blogspot.obsessionbiology.com/2011/12/case-of-panda-ant.html

http://pandaant.org/

http://pandaant.org/panda-ant-facts/

http://featuredcreature.com/this-panda-ant-will-bamboozle-you-about-its-true-identity/ / Euspinolia militaris nicknamed panda ant markings species of wingless wasp Red Velvet Ant cow killer painful sting subdue a grown cow wasp handle bright color aposematic signal related Red Velvet Ant painful sting exhibit extreme sexual dimorphism sexes mating male larger female species mating Tiphiidae nearly extinct species lays approximately 2000 eggs predators eat young panda ants hatch bright colors insect wingless wasp fully grown up to 8 millimeters in length 2-3 millimeters in height feed stenothermic thermophilic /

Friday, 26 June 2015

How to disable your webcam (& why you should)

It’s not news that there are morally disabled people on the ‘Net prepared to invade your privacy, for a range of purposes, including fraud & vandalism. There are hacker tools available, some with a low skill level entry requirement, & forums where advice & other information is exchanged.

More newsworthy is the capacity of some tools to seize control of computer webcams, in some cases without activating the camera activity light. Such tools open up a new range of abuses including voyeuristic invasion of privacy & sharing of images & video.

Below is a screen-shot showing one of the available tools in use, with an image (suitably disguised) of a woman whose privacy has been invaded.


Credit: Ars Technica

How to disable your webcam
http://www.howtogeek.com/210921/how-to-disable-your-webcam-and-why-you-should/

Meet the men who spy on women through their webcams
http://arstechnica.com/tech-policy/2013/03/rat-breeders-meet-the-men-who-spy-on-women-through-their-webcams/ / slave slaves concern paranoia paranoid reports revelations spy on you through webcam disable cover webcam review handy products Script-kiddie hackers easily accessible tools phishing techniques hijack webcams unsuspecting people watch them through their camera store images videos people in compromising situations bedroom uploaded shady websites kids children implementing stop webcams on all the time webcam spying threat government agents hackers law-breaking voyeurs actively spy computer’s webcam ramblings paranoid conspiracy theorist hypervigilant hyper vigilant hyper-vigilant privacy advocate news stories over paranoia uncomfortable reality student sued his school school-provided laptop secretly photographing ensuing legal investigation revealed school collected 56,000 photographs students without their knowledge consent researchers demonstrated activate webcam MacBooks without indicator light turning on previously considered impossible former FBI agent confirmed possible doing it for years documents leaked by Edward Snowden NSA backdoor access cameras on iPhones Blackberries NSA tools remotely monitor users Gumfish malware tool remote video monitoring via webcam BlackShades remote access webcam access victim’s computers Back Orifice marginally skilled malicious users gain access your computer Ars Technica Meet The Men Who Spy On Women Through Their Webcams spying government agents low-tier hackers simple phishing tricks malicious websites simple tools catalog monitor allegations government spying intellectual majority of actual webcam spying creepy Peeping Toms Remote Access Tools RATs Trojans malware well documented examples only active snapping selfies Skyping trust indicator light camera can be active without the light webcam spying real threat spooks at the NSA kid next door access tools webcam against owner then threat legitimate disable or obscure computer webcam documented cases webcam spying insecure recording device permanently disable remove webcam obscure lens disable webcam antivirus anti-virus link running wrong executable whitelist trojan antivirus malware secure help unplug camera desktop users external webcams desktop machines external USB web cam webcam hacking hacker hacked plug an unplugged device workstation monitors USB cable hardware operating system OS BIOS option laptops integrated webcams disable webcam via BIOS reboot microphone camera microphone module same expansion board privacy mic microphone disable OS operating system solution secure foolproof disabling webcam cripple webcam disabling removing driver support Windows Device Manager Imaging Devices roster of devices remote administrative access install missing drivers enable device disable webcam Eyebloc Cover C-Slide tiny plastic slider Creative Cam Covers DIY electrical tape cover /

Thursday, 25 June 2015

Lexus builds a functional hoverboard prototype (video)

Maybe.

Late last year, a hoverboard project was funded on Kickstarter. Some convincing video was produced, but it only hovered above a copper surface.

Now Lexus has made promises:



http://www.bloomberg.com/news/articles/2015-06-24/lexus-builds-a-functional-hoverboard-prototype

http://arstechnica.com/cars/2015/06/lexus-has-built-a-working-hoverboard/ / Back to the Future floating skateboard Toyota back to the future automaker flying cars Lexus luxury brand built working model hover board hoverboard actual working hoverboard prototype liquid nitrogen-cooled nitrogen cooled superconductors magnets Lexus website technology zooming Toyota's magnetic-levitation magnetic levitation train Toyota experiment experimenting prototype cars confidential information studying flying car research and deveopment R&D area Hiroyoshi Yoshiki Toyota’s Technical Administration Group flying car friction resistance road Back to the Future movie released Marty McFly evade pursuers Lexus start testing prototype Barcelona films Lexus /

Wednesday, 24 June 2015

Owls may hold the key to quieter wind turbines & jet aircraft


Credit: Getty Images/Wired

Both wind turbines & jet aircraft have been targets of noise complaints.

Large owls, on the other hand are masters of silent flight. So what’s their secret? A team at the University of Cambridge has been investigating.

http://www.wired.com/2015/06/owls-may-hold-secret-quieter-wind-turbines-jets/ / owl owls secret quiet quieter wind turbines 21st century windmill tips blades 100 feet long move faster winds category five hurricane wind turbines renewable energy advocates target noise health complaints blades are intentionally slowed down less effective generating electricity researchers turned to nature find solution noise problem team University of Cambridge published research wings of large owls masters at silent swooping voles high speeds undetected team discovered birds’ flight feathers create lift downy covering flexible comb of bristles leading edge porous fringe trailing edge bird intricate wing structure Professor Nigel Peake of Cambridge’s Department Applied Mathematics and Theoretical Physics noise from wings fan blades occurs at the trailing edge air is the most turbulent owl’s wing smooths quiets the air birds to hunt more effectively Cambridge team Virginia Tech Lehigh Florida Atlantic Universities prototype material 3D-printed plastic mimic the owls’ natural feature fitted full-sized wind turbine blades tested in a wind tunnel reduced noise generation 10 decibels significant amount of noise measured logarithmically affecting aerodynamics figured out how owls fly replicate testing the coating functioning wind turbine researchers wind farm generate several additional megawatts of electricity without appreciable increase in noise researchers solution applied to airplanes noise serious issue in aviation authorities plane makers airports minimize unpleasant side effect vital industry jet of the future fly like an owl /