College and Education

Posts Tagged ‘Science’

There is still no agreement on the age of the universe, yet passionate look into this, because it is something that concerns us, as we walk in it

Wikipedia gives us, the age of the universe, according to the theory of Big Bang is the time elapsed since the Big Bang to the present. The consensus of contemporary scientists is about 13,600,000,000 years (thirteen million in 1600)

The age of the Universe can be determined by measuring the Hubble constant today and extrapolating back in time with the observed values ​​of the parameters of density (O). Before the discovery of dark energy, it was believed that the universe was so dominant in O in this figure corresponds to Ωm. Note that the acceleration of the Universe’s expansion was the longest era, while the Big Crunch of the universe was young age.

It adds that the problem of determining the age of the universe is closer to the problem of determining the values ​​of the cosmological parameters. Today this is largely overcome in the context of the ΛCDM model, which assumes that the universe contains ordinary matter (baryonic) cold dark matter, radiation (protons and neutrinos) and a cosmological constant. The fractional contribution of each energy density of the universe today is given by the density parameter Ωm, and ΩΛ Ωr. ΛCDM The complete model is described by other parameters, but for the purpose of calculating the age of the universe, these three, along with the Hubble constant H0 are the most important Read the rest of this entry »

The complexity of studying this phenomenon has attracted various sciences to contradict and deepen this phenomenon originated when, if ever existed or is the final stage of capitalism in which we live, or has always had its existence.

Globalization connotes not always correct because it is linked with the economic and social impact is also, technological and cultural.
But let’s go back to the past and old, whether cultural globalization had its origins as 5000 years BC when the Jewish people tried to invade and conquer new lands or countries to impose their religion and culture, so we could say then from that moment we were in the presence of a globalization that began to start and grow.

We move forward in our analysis, how many countries there who speak the same language? That is also due to cultural globalization that influenced those countries in the languages ​​spoken in common. Let’s also great conquerors like Christopher Columbus who discovered America beyond existing theories he never knew he had done, and what technology has always existed? Of course, if we can make the big wars that took to Troy with large ships did not have the people who were to be conquered, Alexander the Great, until the industrial revolution that was the big step towards a modern future.
We can then define what is technology because it sounds today to something that only relates to the Internet, digital, concept that is completely wrong. Read the rest of this entry »

The word hydroponics is derived from the Greek words Hydro (water) and Ponos (labor or work) and literally means “working water.” Hydroponics is the science of crops without soil.
Although hydroponics is, in practice, synonymous with “farming without land,” this does not necessarily mean that plants grow in water or hanging in the air or water baths as is the case of aeroponics. There are various ways of hydroponics, some of which make use of solid substrates that are NOT GROUND, such as coconut shell, rice husk, washed river sand, perlite, rock wool, etc.. In these substrates plants may be adequate support to grow and offer the ability to hold moisture and promote oxygenation of the roots of plants.
Land is a classic substrate for growing. Provides support, maintains moisture and has own soil nutrients which make the crop. On the ground, however, the flow of oxygen is not good and can transmit bacterial and viral diseases that occur in addition to factors such as pollution of soil and groundwater.
These problems do not occur with hydroponics, because the substrate used in hydroponics only offers the support and the ability to hold moisture and oxygen to the roots of plants. It brings nutrients and is easily controlled that is free from contamination and pests and diseases. The nutrients in the water (HYDRO) is used as a nutrient solution of hydroponics. And that is where the true art of the technique, to have adequate nutrient solutions for each crop at different stages, from the nursery (seed), through germination, bud, growth, flowering, pollination, fruit production and harvesting. Read the rest of this entry »

The social psychology is the science of the mind and society. Man as a social animal. There are typically distinctive human social institutions. It seems plausible to assume that the distinctive facts of human society involving an underlying psychology also distinctive, and determine social life aspects of our psychological functioning

The social psychology adopts the assumption that there are psychological processes that determine how society works and the way in which social interaction takes place. Social processes, in turn, determine the characteristics of human psychology.

It is this mutual determination of mind / society that social psychologists study. The concepts, principles, theories and explanations are always psychological, but in a special sense, assuming of course and always giving an interaction with social activity and social processes and products.

His particular focus is directed toward understanding social behavior, based on the social influence process. The distinctive character of social psychology is that it arises from two factors: a) interest in the individual as a social participant. Read the rest of this entry »