SciShow host Michael Aranda explains why atoms bond to one another and form molecules. Aranda also gives simple explanations of chemical, ionic, and covalent bonds, as well as the processes by which they are formed.
SciShow explains what makes atoms bond (and what makes them sometimes seem promiscuous).
Most of us already know that darkness is the absence of light, and that light travels at the fastest speed possible for a physical object. So, what does this mean? In short, it means that, the moment that light leaves, darkness returns. In this respect, darkness has the same speed as light. However, in some instances, darkness actually moves faster than light.
How is this possible? What is the highest possible speed of darkness? This explanation will blow your mind.
Vsauce host Michael Stevens explores the speed of dark. In the video, Stevens explains the somewhat complicated reasoning behind why shadows can arguably “break” the speed of light.
This “It’s Okay to be Smart” video gives us all the scientific facts we didn’t know about pizza.
Enjoy!
How does math keep a folded slice from drooping?
And what does pizza have to do with the speed of light?
Very interesting and fun to watch.
Enjoy!
Perpetual motion, the action of a device that, once set in motion, would continue in motion forever, with no additional energy required to maintain it. Such devices are impossible on grounds stated by the first and second laws of thermodynamics. Perpetual motion, although impossible to produce, has fascinated both inventors and the general public for hundreds of years. The enormous appeal of perpetual motion resides in the promise of a virtually free and limitless source of power. The fact that perpetual-motion machines cannot work because they violate the laws of thermodynamics has not discouraged inventors and hucksters from attempting to break, circumvent, or ignore those laws.
Britannica
Basically, there are three kinds of perpetual-motion devices. The first kind includes those devices that purport to deliver more energy from a falling or turning body than is required to restore those devices to their original state. The most common of these, and the oldest, is the overbalanced wheel
The overbalanced wheel perpetual motion machine apparently originated in India, in the 8th century CE. The Indian astronomer Lalla described a self-rotating wheel driven by mercury moving along its curved spokes. A variation of this idea was described by the Indian author Bhaskara (c. 1159). It was a wheel with containers of mercury around its rim. As the wheel turned, the mercury was supposed to move within the containers in such a way that the wheel would always be heavier on one side of the axle. This idea appears again in Europe in the year 1235 when the French architect Villard de Honnecourt described an overbalanced wheel with hinged hammers equally spaced around its rim. The wheel is actually supposed to be perpendicular to the frame and to the horizontal axle.
