Do Black Holes Exist in Our Sub-Atomic World?
Black holes are spheres in space, and not the funnel shaped objects so often depicted in science fiction. They are defined by the speed of particles traveling towards their core. But they are controlled by the rate of change in that speed. The force of gravity can be expressed in kilometers per second per second. The creation and destruction of black holes can be understood in terms of a pendulum. When the inward force of a black hole is at its maximum, the pendulum is in mid-swing going in one direction. As a visible object approaches the mid-point, it reaches a speed that exceeds the speed of light and becomes a black hole. As it moves past that mid-point, it begins slowing down again. When its speed drops below that of the speed of light it becomes visible again and is no longer a black hole. Do black holes exist in our sub-atomic world and, if so, how do we detect them?
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Do you have a magnetic compass in your head?
Turns out pushups are more telling than treadmill tests when it comes to cardiovascular health.
- Men who can perform 40 pushups in one minute are 96 percent less likely to have cardiovascular disease than those who do less than 10.
- The Harvard study focused on over 1,100 firefighters with a median age of 39.
- The exact results might not be applicable to men of other age groups or to women, researchers warn.
On Thursday, New Zealand moved to ban an array of semi-automatic guns and firearms components following a mass shooting that killed 50 people.
- Gun control supporters are pointing to the ban as an example of swift, decisive action that the U.S. desperately needs.
- Others note the inherent differences between the two nations, arguing that it is a good thing that it is relatively hard to pass such legislation in such a short timeframe.
- The ban will surely shape future conversations about gun control in the U.S.
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