The standard model describes four fundamental forces; gravitational, electromagnetic, strong and weak. How is gravity different? [Read more…] about How does gravity compare to the other fundamental forces?
There are four fundamental forces of nature: gravitational, electromagnetic, strong and weak. Each force can be explained using fields and 3 also have bosons associated with them, known as force carriers. [Read more…] about Fundamental Forces
Galaxies within the universe have been observed to be rotating much faster than we had initially predicted. The gravity produced by the matter which we can observe is not enough for these speeds to be reached, therefore scientists believe that there is extra mass in the universe that we just cannot see, dark matter. [Read more…] about Dark Matter
The rate of expansion of the universe is increasing however, scientists have no explanation of why. The force of gravity should be slowing it down, but we have concluded that there must be some other energy in the universe causing this expansion to accelerate. [Read more…] about Dark Energy
Making computers possible, transistors were invented in 1947. They are used as switches and amplifiers in circuits and are key to controlling flow of current.
Solar cells convert light energy into electrical energy using what is known as the photovoltaic effect, using the fact photons are absorbed by electrons when incident on a metal surface. [Read more…] about Solar Cells – Applying the Photovoltaic Effect