Example of Physical Phenomena

Called physical phenomena to all those phenomena that can cause a physical change in substances, but without modifying its molecular composition, which means that, despite the physical modifications, the substance does not alter.

In physics there are phenomena with which objects are affected and with which they undergo some changes, which do not alter the matter that forms them, but does affect their shape and volume.

Physical phenomena are also those that have to do with the transmission and dispersion of different forms of energy, such as electricity, temperature or movement.

1. Temperature: is the increase or decrease of the thermal sensation. The increase in temperature causes a greater movement of the molecules, and increases the volume. If the temperature drops, the volume decreases, the molecular motion decreases, and in many substances, their density increases.

1. Electricity: Electricity is the flow of electrons through a conductor. The flow of electrons produces other phenomena such as magnetism.

1. Magnetism: Magnetism is the ability of some materials to attract ferrous materials. Being close to a conductor, magnetism induces the flow of electrons and produces electricity.

1. Light: Light is an electromagnetic phenomenon that allows us to see objects, produced by the movement of particles called photons.

1. Movement: Movement is the phenomenon by which an object has a displacement, either of the entire object, or of one or more points of the object in relation to a point.

Other physical characteristics and phenomena are related to those just mentioned, which facilitate, limit or divert their manifestation. These are some of the most important:

1. Conductivity: is the ease with which a substance can conduct heat or electricity. A good conductor allows them to pass easily, while a bad conductor transmits it slowly, and an insulator prevents their passage.

1. Endurance: It is the opposite phenomenon to conductivity, that is, the ability of a substance to resist or limit the transmission of heat or electricity. It is also called resistance to inertia, by which an object tends to maintain its state of rest or motion when a force is applied to it.

1. Dissipation: It is the ability of a material to decrease the temperature more or less quickly.

1. Radiation: It is the transmission from one body to another, without any contact between them. Temperature and electricity can be transmitted through air or vacuum.

1. Friction: It is the phenomenon that produces the friction of the surfaces, and that slows the movement, making the objects stop little by little, by dissipating the movement.

1. Pressure: It is the force that one object exerts on another.

1. Reflection: It is the phenomenon by which, when photons impinge on an object, they bounce, which allows us to see them.

1. Refraction: It is the phenomenon whereby the direction of a ray of light changes its direction by changing the density of the medium through which it is transmitted.

Example of physical phenomena:

1. The radiation.- This can be seen in the thermal radiation produced by an electric heater.
2. The electricity produced by the dynamo of a bicycle.
3. The magnetism that makes a horn honk.
4. The Light produced by a flame.
5. The Movement of a stroller when we push it.
6. The friction of the wheel axles of the stroller, which causes it to stop after we push it
7. The Reflection of light, when we see our image in front of the mirror.
8. The conductivity of a frying pan, which transmits the heat that we apply from below to the food we are cooking.
9. The dissipation of the temperature that is produced in some electronic components by means of aluminum plates.
10. The refraction of light, when we see the short image of a spoon inside a glass of water.
11. The endurance Variable that offers a potentiometer, allows to raise or lower the sound volume of the radio, by allowing or limiting the passage of current.
12. Closeness to fire increases temperature of approaching objects.
13. When cooking in a pressure cooker, the water vapor increases its temperature and expands, increasing the Pressure that the steam exerts against the walls of the pot.