Other studies have also shown that PCBs cause liver tumors (EPA 1996). One study, conducted by the National Cancer Institute (NCI) in 1978, found that a commercial PCB mixture caused a rare type of stomach tumor (gastric adenocarcinoma) in 6 of 144 exposed rats.
VR makers, at least in the fine print, want us to tread lightly through virtual territory. âThe Gear VR should not be used by children under the age of 13. Adults should monitor children (age 13 and older),â goes Samsungâs disclaimer for its new device. âProlonged use should be avoided, as this could negatively impact hand-eye coordination, balance, and multi-tasking ability.
One important way VR headsets can increase immersion is to increase the field of view i.e. how wide the picture is. A 360-degree display would be too expensive and unnecessary. Most high-end headsets make do with 100 or 110 degree field of view, which is wide enough to do the trick.