Do You Know
Questions & Answers on General Knowledge.
The earth's surface is moving at something like 950 mph as it rotates. Why don't we notice this when we are in an airplane?
It's true that the earth's surface is moving eastward rapidly relative to the earth's center of mass. However, that motion is very difficult to detect. When you are standing on the ground, you move with it and so does everything around you, including the air. While you are actually traveling around in a huge circle once a day, for all practical purposes we can imagine that you are traveling eastward in a straight line at a constant speed of 950 mph relative to the earth's center of mass. Ignoring the slight curvature of your motion, you are in what is known as an inertial frame of reference, meaning a viewpoint that is not accelerating but is simply coasting steadily through space. You'll notice that I keep saying "relative to the earth's center of mass" when I discuss motion. I do that because there is no special "absolute" frame of reference. Any inertial frame is as good as any other frame and your current inertial frame is just as good as anyone else's. In fact, you are quite justified in declaring that your frame of reference is stationary and that everyone else's frames of reference are moving. After all, you don't detect any motion around you so why not declare that your frame is officially stationary. Since the air is also stationary in that frame of reference, flying about in the air doesn't make things any more complicated. You are flying through stationary air in your old stationary frame of reference. The only way in which the 950 mph speed appears now is in comparing your frame of reference to the rest of the earth: in your frame of reference, the earth's center of mass is moving westward at 950 mph.
What is the Sahara known for?
How does electricity work?
What do raptors eat?
What were the bizarre ingredients of history’s most exotic Christmas pies?
What are the Lumière brothers famous for?
What is a computer virus?
Who invented the first computer?
Why do I see "No Smoking" signs in the windows of restaurants?
Why is it any worse to observe a solar eclipse rather than a normal glimpse at the sun?
Why doesn't glass have electrons to carry heat. What is glass made of?
What is the difference between an elastic collision and an inelastic one? How does an inelastic collision work and why?
Why do wives call money from their husbands “pin money”?
What is the "memory effect" of a NiCad (nickel-cadmium) battery? Is it reversible or minimizable?
Why do CD's skip?
Do sparks generated by Tesla coils shock humans? If not, why not?
What is the Parthenon?
What is the Arctic?
Why is it that when you stand in front of a flat mirror, your image is reversed horizontally (left-right) but remains the same vertically (up-down)?
Do hand carried microwave heaters exist or must the microwaves always be enclosed, as they are in a microwave oven?
What are the types of animals that live in North America?
What other types of films were encouraged by sound?
How many meteorites reach Earth in one year?
Could you suspend a car on hot air produced below it?
How fast is the earth moving through space? Does this movement affect our perception of time?
What is Tornado Alley?
How To Build or Rebuild Trust
Most Cruel Rulers Ever in History
Never seen Water Like This
Rivers of India
Benefits of Cantaloupe
Simple Tips To Living Longer
Tips to get ready for Work
Eat a good breakfast. Pop a piece of toast in the toaster and have at least three egg whites with your breakfast. Have a good breakfast with good carbs, good fats, and protein. The combination will keep you satisfied longer. A six ounce glass of orange juice is a good beverage to have with breakfast. However, it is full of sugar and should be drank in moderation. Oatmeal, cereal, or a banana are all good carbs to eat when you start your morning.