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Why do we not fall off from the Earth?
Gravity is the force of the Earth that attracts every object towards itself. From our perspective, this force always acts downwards. For a long time, people did not believe that the Earth is round because then the people 'underneath the sphere would have actually fallen. In 1687, a physicist, IsaacRead more
Gravity is the force of the Earth that attracts every object towards itself. From our perspective, this force always acts downwards. For a long time, people did not believe that the Earth is round because then the people ‘underneath the sphere would have actually fallen. In 1687, a physicist, Isaac Newton, proved that the force of gravity always acts towards the center of the Earth. On the Earth, the force of gravitation always acts ‘downwards irrespective of Eskimos in the Arctic region, people in Europe, or inhabitants of Australia.
See lessHow did we discover that the Earth is round?
About 3000 years ago people believed that the Earth was flat. But people wondered why ships disappeared at the horizon Sailors too returned from journeys and were proof that ships did not fall off the edge of the Earth. The simplest explanation was: that the Earth must be round. The final proof cameRead more
About 3000 years ago people believed that the Earth was flat. But people wondered why ships disappeared at the horizon Sailors too returned from journeys and were proof that ships did not fall off the edge of the Earth. The simplest explanation was: that the Earth must be round. The final proof came in the year 1522 after the expedition of Ferdinand Magellan, who was the first to sail around the Earth.
See lessHow do we discover what is inside the Earth?
Caves and mines go only up to 1-2 km inside the Earth. Even the deepest wells of the world, such as the one 12 km deep in the Russian Kola Peninsula or the 9-km-deep one in the Upper Palatinate, hardly scratch the Earth's crust. One can 'look' deep inside the Earth in the aftermath of earthquakes orRead more
Caves and mines go only up to 1-2 km inside the Earth. Even the deepest wells of the world, such as the one 12 km deep in the Russian Kola Peninsula or the 9-km-deep one in the Upper Palatinate, hardly scratch the Earth’s crust. One can ‘look’ deep inside the Earth in the aftermath of earthquakes or by creating nuclear explosions. The explosions generate sound or seismic waves. They also throw off rock particles. By measuring their intensity and timings, scientists discover the composition of the Earth’s interiors.
See lessWhat is the internal structure of the Earth?
Like an onion, the Earth has several layers. The outermost layer, the Earth's crust, has an average depth of about 40 km. As compared with the diameter of the Earth, which is around 12,700 km, the Earth's crust is very small. It is primarily made up of solid rocks. Below the crust is the mantle, reaRead more
Like an onion, the Earth has several layers. The outermost layer, the Earth’s crust, has an average depth of about 40 km. As compared with the diameter of the Earth, which is around 12,700 km, the Earth’s crust is very small. It is primarily made up of solid rocks. Below the crust is the mantle, reaching a depth of about 2900 km. Due to the heat inside the Earth, the mantle consists of solid and molten rocks. Below the mantle is the core, made up of iron and nickel. The deeper one travels inside the Earth, the hotter it is. The temperature in the core is between 4000 and 5000°C
See lessWhat is the external structure of the Earth?
It has been known for more than 2000 years that the Earth is round, but we were able to actually see this much later only when we flew into space. The knowledge of why we do not fall off the Earth is much more recent. A journey as described by author Jules Verne in his book Journey to the Center ofRead more
It has been known for more than 2000 years that the Earth is round, but we were able to actually see this much later only when we flew into space. The knowledge of why we do not fall off the Earth is much more recent. A journey as described by author Jules Verne in his book Journey to the Center of the Earth was, after all, impossible. Only one thing was known: the Earth is made up of soil, rocks, and water. Today, we know that the Earth is also surrounded by an air cover called the atmosphere.
See lessCharging supercapacitors with reversed polarity
Electrolytic capacitor polarization is initially set at the factory by applying voltage to form the insulating oxide layer. That is why caps have a polarity and these standard supercaps are no different. Reversing the polarity will damage the original insulating layer first and then start to form aRead more
Electrolytic capacitor polarization is initially set at the factory by applying voltage to form the insulating oxide layer.
That is why caps have a polarity and these standard supercaps are no different. Reversing the polarity will damage the original insulating layer first and then start to form a new insulating layer with the applied polarity. It is not something that should be allowed to happen, so consider the capacitors damaged, or at least degraded, and they could be unstable and dangerous too.
Here is also what manufacturer says about reversing the polarity:
https://maxwell.com/wp-content/uploads/2021/08/Notes_on_Using_Ultracapacitor_Cells.pdf
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