Top 50 of Science, the most read and important in the encyclopedic dictionary DefinitionABC

1

Nature is full of irreversible processes, that is, processes that take a system from an initial state to a final state and that cannot be carried out in...

2

One is very familiar with the concept of thermal energy, even without perceiving it; Just by checking the temperature of the place where we live, we appreciate a...

3

This type of forces is mainly due to the irregularities, even at a microscopic level, that all surfaces have, and that cause a kind of grip or...

4

The elements of a circuit The simplest circuit we can have is one in series, composed of a voltage source and a resistor. The voltage or difference of...

5

The frequency (f), along with other parameters, is used to describe a wave, where the frequency represents the inverse of the period (T); and the period is the time in...

6

The laws of Classical Physics allow predicting the future result by observing the present data on parameters such as position, speed, mass and other variables,...

7

The set of genetic material found in the macrobiotics of an organism, that is, in its bacterial flora, is known as the microbiome. These genes constitute a...

8

Electrostatic Force The study of electrostatics begins when in 1785 Charles Augustin de Coulomb managed to measure the electrical force between...

9

The difference between migration in other groups of animals in general and what happens in birds is mainly a question of spatio-temporal scale. But not...

10

Astrobiology was born during the period in which the design of the Viking missions was planned, this was during the 60's, since it is considered that those...

11

The bodies of living beings such as humans can be colonized by allied microorganisms that protect them from the invasion of pathogens and improve health in...

12

A very notable recent discovery is the discovery that some of our genes are the same as those of single-celled organisms. This serves as evidence that...

13

Firstly, it is necessary to specify some essential concepts to understand the invasion process. We will call the species that live in a certain territory...

14

Most of these microorganisms are in close symbiosis with the host organism, protecting it from pathogens and contributing to the production of compounds...

15

Prior to these equations, it was said that electric and magnetic forces were “forces at a distance”, there was no known physical means by which...

16

The high mutation rate of the mitochondrial genome (10 to 20 times that of nuclear DNA, for genes of comparable function) is useful in differentiating between...

17

Pascal's principle can be verified using a spherical shell provided with a piston and with perforations at various points as shown in the figure. Whether...

18

A universal phenomenon, or scientific fiction? Is there life on other planets or moons? What is that life like and what are the conditions where it lives? Are you...

19

Studying microorganisms has allowed us to develop techniques to remove contaminants from complex environments such as the sea, soil, among others. That's why the...

20

Among the many molecules present in living beings, it is worth highlighting lipids, carbohydrates, genes and proteins. However, most scientists...

21

For its development, there are important methodological considerations: a deep knowledge of some historical and demographic aspects of the population is required...

22

Imagine that you are on the shore of a body of water, like a lake for example, on the surface of this lake you can constantly observe small waves that...

23

It is a physical quantity that depends on the state of matter, since the specific heat of a substance in a liquid state is not the same as that of the same substance in...

24

The phenomenon of refraction occurs with different types of waves, however, the most observed is that of light, in which case it is appreciated by introducing a long object such as a...

25

To better understand the effect associated with the moment of force, we will assume the unfortunate case where two vehicles collide at an intersection. Intuitively, it...

26

In the great biological diversity of the planet there is a group of microorganisms that have been controversial since they were discovered, given that they share many similarities with...

27

Despite being a scalar dimension, the passage of time always advances progressively forward, which is why negative times are not conceived in physics...

28

There are many factors by which a group of microorganisms develops this capacity. Antibiotics or antimicrobial agents are produced by others...

29

The Otto cycle owes its name to the fact that it was the German engineer Nikolaus Otto who in 1876 developed this four-stroke spark ignition machine, based on the...

30

The current need to obtain quantitative results from biological experiments, to develop technologies used in different diagnostic methods or therapies,...

31

Over time, and with the advancement of knowledge of the biology of these groups of organisms, it became increasingly evident that the organisms included in the kingdom...

32

All natural resources have a regeneration time, that is, the amount of time you have to wait for the resource to become available for...

33

The importance of Modern Physics lies in its ability to explain many natural phenomena that were previously indecipherable through classical Physics. For example,...

34

The standard unit of measurement for mechanical work is the joule (J), which is equal to the energy transferred when a force of one Newton (N) is applied to an object and...

35

A bacteria with an ovoid shape is called a coccus and when its shape is cylindrical it is called a bacillus. Between these two groups there are variations such as spirilla, which are bacilli with...

36

When the first blood transfusions were performed from one person to another, doctors realized that, while sometimes the transfusion was...

37

We, like all other animals, are capable of autonomous movements. Our organs are constantly functioning and everything must be...