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      SCIENTIFIC HOBBIES

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 Copyright SCIENTIFIC HOBBIES  2015

                                        PHYSICAL SCIENCES

The physical sciences are those which basically study how things work. The categories here demonstrate the properties of electricity, light , magnetism, the electromagnetic spectrum, force, gravity and motion. All of these sciences interrelate. Most of these products could easily belong to a different category as included here for purposes of this website.


        Physics and Electricity

Electricity is basically the effects of charged atomic particles and electron streaming. Lightning, static charge and electric current are examples. Common terms are electromagnetic and field currents, electric potential and electromagnets. Radio waves and the electromagnetic spectrum are also associated with electricity.

           Light and Optics

Light is the visible portion of the electromagnetic spectrum which also includes ultraviolet and infrared wavelengths. Optics are devices used to examine these wavelengths, including lens, prisms, spectrographs and spectrometers. X rays and gamma rays are also on the extreme ends of the electromagnetic spectrum.

                Magnetism

Magnetism is a physical force dependent upon properties of fundamental elements.The properties of electricity and elemental particles create magnetic fields, which can not be visible. They manifest the force by polarity, or a positive, neutral or negative state. The Earth has a magnetic field which protects the Earth from solar radiation. Certain metals, such as iron, are highly magnetic. The poles of an magnetic field can either attract or repeal one another, as shown by many magnet experiments.

            Force and Motion

These are two closely related concepts which involve mass, speed, gravity and inertia. A force is required for any action, and a motion can the result. Gravity is probably the most recognized force, creating inertia. The motion of planets around the Sun is an example on a macro scale. Many factors can affect force and motion, such as temperature and friction. On a micro scale, force and motion are present on the the attraction of an atom nucleus and it’s electron(s).

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