Why can you safely hold your bare hand in a 200 ◦ C oven for a few seconds? The air that immediately exits the oven as you open it indeed has 200°C. But cannot be in contact with your hand for more than a few moments since it raises quickly. This is way to short […]
Why is my phone compass so wrong?
Why is my phone compass so wrong? Some people have found that the compass recalibrates in the wrong direction after dropping their phone, or their phone compass simply starts to point in the wrong direction over time. Wrong – instead, phone manufacturers have used the motion sensing capabilities of modern smartphones to create a motion-based […]