2016年11月28日 星期一

第五週 虛擬實境

Mark Zuckerberg: Virtual reality can become the most social platform
BARCELONA — Facebook CEO Mark Zuckerberg made a surprise appearance at Samsung’s Mobile World Congress press conference Sunday to talk up progress in virtual reality and to promote VR in the future as “the most social platform.”
Facebook, of course, paid some $2 billion in 2014 to buy Oculus which has been working with Samsung on its Gear VR consumer headsets. In fact, Zuckerberg appeared on stage during the MWC event just after audience members took off the Gear VR headsets they had donned to experience virtual reality during Samsung’s presentation.
Zuckerberg is actually scheduled to deliver a keynote address to MWC attendees Monday, presumably to address Internet.org and Facebook’s struggles to bring affordable Internet to poor places around the world, which has met opposition because of net neutrality concerns.
But Zuckerberg was all about VR during his brief appearance on the Samsung stage.
“Pretty soon we’re going to live in a world where everyone has the power to share and experience whole scenes as if you’re just there, right there in person,” Zuckerberg says. “Imagine being able to sit in front of a campfire and hang out with friends anytime you want. Or being able to watch a movie in a private theater with your friends anytime you want. Imagine holding a group meeting or event anywhere in the world that you want.  All these things are going to be possible. And that’s why Facebook is investing so much early on in virtual reality. So we can hope to deliver these types of social experiences.”
Facebook also said Sunday it had formed a team to create social interactions in virtual reality. The team will work with Oculus and others at Facebook. It also said it was bringing its streaming technology for 360 video to Samsung Gear VR in coming weeks.
Facebook has been selling Gear VR for $99, though for the time being it will be bundled for free to folks who preorder the company’s latest flagship phones that were unveiled here, the Galaxy S7 and Galaxy S7 edge. According to Zuckerberg millions of people will get their hands on a Gear VR this year.
To deal with the challenges in delivering social VR, Facebook recently created new teams to build the next generation of social apps in VR.  Hundreds of new titles are coming to Oculus store this year, Zuckerberg says, including Minecraft.
“We’re excited to be focused on building this next important computing platform that has the potential to be changing our lives and to be doing it with zest.”
Virtual reality is getting a lot of focus at Mobile World Congress. HTC, in partnership with Valve, announced that it will begin taking preorders on the consumer version of HTC Vive on Feb. 29; the price is $799 for now.
Samsung and Korean rival LG announced new 360 cameras and the latter is also bringing own VR headset to work with its new G5 phone.
And Chinese-owned Alcatel will ship its new Idol 4S smartphones in a plastic box that doubles as Google Cardboard compatible VR viewer.


Who:  Facebook CEO Mark Zuckerberg 
How:  Made a surprise appearance at Samsung’s Mobile World Congress press conference to talk up progress in virtual reality and to promote VR in the future as “the most social platform.” 
When: Sunday

Key words: 
virtual reality 虛擬實境
headset 耳機
unveil揭開
preorder 預購
neutrality 中立

2016年11月8日 星期二

第四週 火星探險

Mars Rover Curiosity Completes First Full Drill
By Marc Kaufman, for National Geographic News

For the first time in history, humans have drilled a hole into rock on Mars and are collecting the powdered results for analysis, NASA announced Saturday.
After weeks of intensive planning, the Mars rover Curiosity undertook its first full drill on Friday, with NASA receiving images on Saturday showing that the procedure was a success.
Curiosity drilled a hole that is a modest 2.5 inches (6.35 centimeters) deep and .6 inches (1.52 centimeters) wide but that holds the promise of potentially great discoveries.
"The most advanced planetary robot ever designed now is a fully operating analytical laboratory on Mars," John Grunsfeld, NASA associate administrator for the agency's Science Mission Directorate, said in a statement on Saturday.
"This is the biggest milestone accomplishment for the Curiosity team since the sky-crane landing last August."
The site of the much-anticipated penetration is a flat section of Mars rock that shows signs of having been underwater in its past.
Called Yellowknife Bay, it's the kind of environment where organic materials—the building block of life—might have been deposited and preserved long ago, at a time when Mars was far wetter and warmer than it is today.
The contents of the drilling are now being transferred into the rover's internal collection system, where the samples will be sieved down to size and scoured to minimize the presence of contamination from Earth.
  Then the sample will be distributed to the two instruments most capable of determining what the rocks contain.
The first is the Sample Analysis on Mars (SAM), which has two ovens that can heat the powdered rock to almost 2000°F (1093°C) and release the rock's elements and compounds in a gaseous form.
The gases will then be analyzed by instruments that can identify precisely what they are, and when they might have been deposited. Scientists are looking for carbon-based organics believed to be essential for any potentially past life on Mars.
Powder will also go to the Chemistry and Mineralogy (CheMin) instrument for a related analysis that looks especially at the presence of minerals—especially those that can only be formed in the presence of water.
Louise Jandura, chief engineer for Curiosity's sample system at NASA's Jet Propulsion Laboratory, said that designing and testing a drill that can grab hold of Martian rock and commence first a percussive shallow drilling and then dig a deeper hole was difficult.
The drill, which is at the end of a 7-foot arm, is capable of about 100 discrete maneuvers.
"To get to the point of making this hole in a rock on Mars, we made eight drills and bored more than 1,200 holes in 20 types of rock on Earth," Jandura said in a statement.
Results from the SAM and CheMin analyses are not expected for several days to weeks.


Who: NASA
How: For the first time in history, humans have drilled a hole into rock on Mars and are collecting the powdered results for analysis
Where: On Mars
When: Saturday

Key words:
Curiosity 好奇
Propulsion 推進
Contamination 汙染
Sieve 篩選
Compound 增加、使惡化、使混合