1 00:00:00,400 --> 00:00:08,480 There are plenty of ways that people try to escape the sometimes underwhelming 2 00:00:05,600 --> 00:00:13,599 reality of everyday life. Going to the movies, visiting the local watering 3 00:00:10,639 --> 00:00:18,640 hole, or just sleeping until noon. But there's been a lot of buzz recently 4 00:00:16,400 --> 00:00:23,600 about the idea of actually immersing yourself in a virtual world with a 5 00:00:21,199 --> 00:00:29,679 virtual reality headset such as the Oculus Rift or HTC Vive. But even though 6 00:00:27,279 --> 00:00:36,000 the concept of plugging a generalpurpose VR headset into a gaming PC is just 7 00:00:33,680 --> 00:00:40,399 starting to take off, people have been sticking their heads into virtual 8 00:00:37,600 --> 00:00:45,040 environments for quite some time. All the way back to 9 00:00:42,440 --> 00:00:48,320 1962 when the world was introduced to the 10 00:00:45,879 --> 00:00:54,079 Sensorama, a contraption that not only played 3D movies, but could tilt the 11 00:00:51,120 --> 00:00:59,359 viewer's seat and even simulate wind and different odors. A few years later, a 12 00:00:56,879 --> 00:01:03,720 headset called the Sword of Damocles came out. Man, they had better names 13 00:01:00,960 --> 00:01:09,680 back then. Rift Vive, I want a Sword of Damocles. The name was because it was so 14 00:01:06,799 --> 00:01:15,200 heavy though that it had to be suspended from the ceiling. Although it could only 15 00:01:12,240 --> 00:01:21,200 display simple wireframe graphics, it was considered the first true VR 16 00:01:17,920 --> 00:01:23,240 headset. Virtual reality NVIDIA games 17 00:01:21,200 --> 00:01:27,920 didn't really start appearing until the 1980s when we started seeing arcade 18 00:01:25,680 --> 00:01:33,840 games like Battle Zone that used a periscope viewfinder to immerse players 19 00:01:30,640 --> 00:01:36,240 in the action and 3D glasses that were 20 00:01:33,840 --> 00:01:41,840 available for consoles like the Sega Master System. 1995 brought us the 21 00:01:39,200 --> 00:01:46,960 Nintendo Virtual Boy, the first mass marketed VR console. But although that 22 00:01:45,040 --> 00:01:52,640 one was marketed as being a totally immersive experience, its underwhelming 23 00:01:49,840 --> 00:01:58,079 monochrome graphics and difficulty of use made it one of the worst flops in 24 00:01:55,200 --> 00:02:02,960 Nintendo history. However, other companies were working on PC compatible 25 00:02:00,479 --> 00:02:07,840 headsets during this time, and the evolution of technology over the years 26 00:02:05,439 --> 00:02:13,760 ultimately gave us the high-spec VR headsets of today. But then, how do they 27 00:02:10,640 --> 00:02:16,959 work? Modern VR headsets show slightly 28 00:02:13,760 --> 00:02:19,440 different images to each of your eyes to 29 00:02:16,959 --> 00:02:25,040 fool your brain into thinking the 2D image on the screen is actually 3D. This 30 00:02:22,879 --> 00:02:30,239 principle is called stereoscopy and is actually similar to how the screen on a 31 00:02:27,280 --> 00:02:35,200 Nintendo 3DS works. To achieve a higher level of immersion, VR headsets use 32 00:02:32,959 --> 00:02:40,080 special lenses to increase the user's field of view, as well as pixels with 33 00:02:37,680 --> 00:02:44,959 very quick response times to reduce motion blur, meaning OLED screens have 34 00:02:42,800 --> 00:02:48,640 become popular for headsets, which you can learn more about here. By the way, 35 00:02:46,800 --> 00:02:54,560 unlike a monitor, which can deliver a perfectly enjoyable gaming experience at 36 00:02:51,200 --> 00:02:57,120 60 frames per second, headsets have 37 00:02:54,560 --> 00:03:01,680 higher refresh rates, typically around 90 Hz, and the high quality ones today, 38 00:02:59,599 --> 00:03:06,640 which is important because lower frame rates, lower refresh rates, can be 39 00:03:03,920 --> 00:03:11,040 disorienting in a VR context and cause motion sickness. Not what you want after 40 00:03:09,280 --> 00:03:16,480 you've dropped several hundred bucks on a Rift or a Vive. Because though of the 41 00:03:14,159 --> 00:03:22,400 high frame rate requirement and the headset resolutions that are well beyond 42 00:03:18,680 --> 00:03:24,959 1080p, a high-end PC system is basically 43 00:03:22,400 --> 00:03:30,799 a necessity. But beyond just graphics, VR headsets have sensors like gyroscopes 44 00:03:28,319 --> 00:03:35,280 and accelerometers to allow for head tracking so that what you see will 45 00:03:33,440 --> 00:03:41,440 change depending on where you're looking. Some headsets like the HTC Vive 46 00:03:38,480 --> 00:03:46,080 even use separate external base stations and lasers to enable whole room tracking 47 00:03:44,239 --> 00:03:52,159 so the system can detect the motion of your hands as well. So, as you can 48 00:03:49,280 --> 00:03:57,439 imagine, these headsets don't exactly come cheap. Fortunately, other lowerc 49 00:03:55,120 --> 00:04:01,680 cost VR solutions are becoming increasingly popular, such as Google 50 00:03:59,439 --> 00:04:06,159 Cardboard, which isn't much more than a couple of lenses inside a cardboard box 51 00:04:04,319 --> 00:04:10,239 with a slot where you can insert a smartphone. Developers have already 52 00:04:08,239 --> 00:04:14,640 written quite a few apps for Cardboard, making it a way to enjoy VR on the cheap 53 00:04:12,720 --> 00:04:19,840 if you don't have the coin for a gaming rig and a fancier headset. And although 54 00:04:17,519 --> 00:04:23,600 this new generation of VR headsets is just now hitting the market, there's 55 00:04:21,680 --> 00:04:28,639 already quite a bit of industry support, meaning that VR has the potential to 56 00:04:26,080 --> 00:04:34,560 really shake up how we experience games on both PCs and consoles. Maybe one day 57 00:04:31,759 --> 00:04:37,919 we'll even have VR Techquiki. 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