How does VR create a 3D feeling for the brain?, By using only one very large screen., By showing a slightly different image to each eye using two screens., By using bright lights to trick the eyes., By playing very loud 3D music., To prevent motion sickness, the time between your movement and the picture update must be:, Exactly 1 minute., More than 50 milliseconds., Less than 20 milliseconds., It does not matter., Which sensors help the headset track your head movements?, Gyroscopes and accelerometers., GPS and Wi-Fi., Cameras and microphones., Thermometers and light sensors., What is the "personal tip" to stop feeling dizzy or sick in VR?, Close your eyes for ten minutes., Drink a lot of cold water., Turn off the lights in the room., Place a simple fan in front of you., What is the "screen door effect"?, When the headset is too heavy., When the battery runs out quickly., When the headset gets too hot., When you can see the tiny pixels on the screen.

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