Science Articles
256: Telescope Buyers Guide Do You Really Need A Telescope
Often we will think that to get into astronomy, you need a telescope. However, this is not true; you also don't need a telescope to get the most out of astronomy. Though a telescope is great, there is a lot you can do without a telescope. In this article, you will discover how you can get into astronomy now!
The biggest way to get into astronomy
257: Temperature Sensors%3B A Brief Introduction
From the humble thermometer to advanced electrical heat recorders, temperature sensors are used for all manner of purposes in a disparate number of industries. The more advanced forms of contact measurement device are labelled as thermocouples and resistance temperature detectors or RTDs. The measurement of temperature typically takes place in liqu
258: The Affects of Frozen Water And Dew
Do you know what the frost on your cars and the ground is? It is morning dew, which is water that comes in the morning when you wake up. It will be on your grass, trees, leaves, windows, and everywhere that you can see outside. The frost only comes when it is cold outside, so don't walk on it with your bare feet because your feet will feel so cold
259: The Big Bang And The Start Of The Universe
"In the beginning God created the heavens and the earth." This is how the Bible kicks off, and for almost two millennia was the accepted theory for how the Universe and the Earth came into being. A tricky subject and something that takes a great deal of thought to even contemplate, the origin of time is not an easy thing to study. Up until modern t
260: The First Life On Land
Once photosynthesising cells present in the oceans had produced enough oxygen to form the ozone layer conditions on land were much more favourable to life than before. Without exposure to ultraviolet radiation cells were much more likely to survive being washed ashore. After a major extinction event 488 million years ago plants and fungi started to
261: The Fossil Evidence Is Missing
To his credit, Charles Darwin was a blunt realist. He fully realized that if his theory of evolution was true there should be abundant proof to back him up.
But the application of real science, which means stringent observation and examination of the visible evidence, has uncovered no such proof.
The complete lack of transitional fossils ref
262: The History Of Horoscopes And Astrology
For most of us, our only knowledge of horoscopes comes from what we read in the newspaper or read in a magazine while were in line at the supermarket. These horoscopes are full of vague predictions and advice that can be interpreted any number of ways, thus earning them a reputation of worthlessness and the skepticism of experts.
However, a tru
263: The History of Pheromones
Pheromones are chemicals emitted by living organisms to send messages to individuals of the same species. The idea that chemical communication takes place between individuals of the same species was advanced as early as the late 17th century the first evidence in support of this was obtained in the 19th century by the French priest Henri Fabre, who
264: The History of Semiconductor Systems
Quasi-conductors are considered to be a unique class of chemical elements. In the first time this unique class was discovered in the 1890’s but more thoroughly it started to be discovered only after the First World War in Europe and in Soviet Union. The first successful research was carried out by the Russian physicists in 1923. They proved that se
265: The Importance Of Turbidity To Society And The Environment
Turbidity may sound like a complicated scientific term but in essence it is a simple definition concerned with the cloudiness of water. More specifically turbidity refers to the light that is able to pass through a water sample because of the sediment present in the liquid. In most cases it is measured using a meter although there are a variety of
266: The Next Generation of Space Telescopes
Originally dubbed the Next Generation Space Telescope, what is now known today as the James Webb Space Telescope is the successor to the Hubble Space Telescope. Scheduled to launch sometime in 2013, the Next Generation Space Telescope is being designed to be bigger and better than the Hubble with many more capabilities.
The James Webb Space Tel
267: The Quest For Water In Outer Space And Other Planets
When we look at satellite pictures that are sent to earth from space, it is wondrous to see how vividly blue our planet is. It is, of course, the vast amount of water that we are seeing. It can give us a better idea of just how little land masses there are compared to the water content. We know that without the water that we have here on earth it w
268: The Resistivity Meter%3B Applications In The Electrical And Mining Industries
Resistivity is the term used when describing the specific electrical resistance of a material. Put into lay mans terms it is a measurement of the resistance of any given material to electric current; it is normally measured using a resistivity meter. A material that has a high resistivity will impede the flow of electricity greatly while those with
269: The Science Behind the Optical Telescope
An optical telescope is a telescope that is used to gather and focus light mainly from the visible part of the electromagnetic spectrum. The optical telescope allows the user to directly view a magnified image of something far away. The term is used especially for a monocular with static mounting for observing the sky.
There are three primary
270: The Science Education Belief In America
Political leaders, tech executives, and academics often claim that the U.S. is falling behind in math and science education. They cite poor test results, declining international rankings, and decreasing enrollment in the hard sciences. They urge us to improve our education system and to graduate more engineers and scientists to keep pace with count
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