Saturn is Visible Without Using a Telescope
More Science Articles
A Guide To Portable Hardness Testers
What are Portable Hardness Testers Portable Hardness Testers, as the name suggests, are portable (moveable) instruments that are used for on-site hardness measurement tests. The advantage of portable hardness testers over conventional stationary testers is that while the latter require the sample to be brought to the testing apparatus, the portable testers can be taken to the site for the hardness test.
The Truth About Rockwell Hardness Testers
Introduction Rockwell Hardness Testers, like other hardness testers, measure the hardness of materials by measuring the materials resistance to penetration under a specific force. Unlike other testers, however, the Rockwell testers measure the net increase in the depth of indentation (rather than the hemispherical area) as and when a load is applied.
Brinell Hardness Testers And The Testing Method
Introduction One of the earliest invented methods of measuring the hardness of materials, the Brinell test, makes use of a special kind of tabletop hardness tester - the Brinell Hardness Tester. The Brinell Hardness Testers give the Brinell Hardness of a material by means of creating an indentation on the specimen material surface.
The Truth About Vickers Hardness Test
What is Vickers Hardness Test Vickers Hardness Test is the most widely accepted method for measuring the hardness of materials. Vickers test provides a continuous scale of hardness and it can be used for all metals - from the very soft ones to very hard metals. The Vickers Hardness Test is described in ASTM Standard E92-72.
Utility Of Mohs Hardness Testing
What is Mohs Hardness Testing Evolved by the German mineralogist Friedrich Mohs in 1812, Mohs Hardness Test is one among the earliest ways of measuring hardness and it revolves round the observation whether a materials surface is scratched by a substance of known or defined hardness. This leads us to the concept of Mohs hardness, which is defined as 'how well a substance will resist scratching by another substance'.
Barcol Hardness Testing And Its Applications
What is Barcol Hardness Testing Barcol Hardness Testing is a method of measuring the hardness of reinforced and non-reinforced rigid plastics. The hardness value is arrived at by assessing the plastic materials resistance to being penetrated by the indenter. How is the Barcol Hardness Testing done The Barcol Hardness test is carried out with the help of a Barcol Impresser or a Barcol Hardness Tester.
Benefit From Janka Wood Hardness Rating
What is Janka Wood Hardness Rating Janka Wood Hardness Rating is a relative measurement of the wood's impact-resistance and wear-resistance, an evaluation of its hardness. The higher the rating, the harder is the species of wood. Applications Of Janka Wood Hardness Rating Janka Wood Hardness Rating being the numerical representation of the wood's durability (its ability to withstand denting and wearing) it is easy to select a wood-species depending on the use it is being put to.
Saturn, the sixth planet from the Sun, has the most spectacular set of rings in the solar system. Saturn has been known since prehistoric times. Saturn is visibly flattened (oblate) when viewed through a small telescope; its equatorial and polar diameters vary by almost 10% (120,536 km vs. Saturn also exhibits long-lived ovals (red spot at center of image at right) and other features common on Jupiter. Saturn's rings remained unique in the known solar system until 1977 when very faint rings were discovered around Uranus (and shortly thereafter around Jupiter and Neptune). Saturn is the least dense of the planets; its specific gravity (0. Saturn is visibly flattened (oblate) when viewed through a small telescope; its equatorial and polar diameters vary by almost 10% (120,536 km vs.
Rings
Rings are 270,000 km in diameter, but only a few hundred meters thick. Early observations of Saturn were complicated by the fact that the Earth passes through the plane of Saturn's rings every few years as Saturn moves in its orbit. Saturn's rings are extraordinarily thin: though they're 250,000 km or more in diameter they're less than one kilometer thick. Two prominent rings (A and B) and one faint ring (C) can be seen from the Earth. The origin of the rings of Saturn (and the other jovian planets) is unknown. The current set of rings maybe only a few hundred million years old.
Satellites
The rings and the larger satellites are visible with a small astronomical telescope. There are satellites within the rings which result in the gaps that are present between some rings. Though they may have had rings since their formation, the ring systems are not stable and must be regenerated by ongoing processes, perhaps the breakup of larger satellites. Saturn has at least 35 naturally occurring satellites. All five, like the newly discovered four outer moons of Saturn, are irregular satellites.
Saturn's interior is hot (12000 K at the core) and Saturn radiates more energy into space than it receives from the Sun. Saturn's rings, unlike the rings of the other planets, are very bright (albedo 0. Saturn is the most oblate (flattened) planet in our Solar System. Saturn's outermost ring, the F-ring, is a complex structure made up of several smaller rings along which "knots" are visible. Saturn also exhibits long-lived ovals (red spot at center of image at right) and other features common on Jupiter. Saturn's bright rings are made of ice chunks (and some rocks) that range in size from the size of a fingernail to the size of a car. Saturn is visible without using a telescope, but a low-power telescope is needed to see its rings. Saturn is the only planet in our Solar System that is less dense than water. Saturn's auroral displays are caused by an energetic wind from the Sun that sweeps over the planet, much like Earth's aurora, which is occasionally seen in the nighttime sky.
About the Author
Niel Hudgens is a successful Webmaster and publisher of www.AstronomistsUnlimited.com. He provides more information about astronomy and astronomy issues that you can research in your pajamas on his website.
Source: Science Articles on ArticlesTree.com
Recent Science Articles
Context, Background, Meaning - Part II
II. Meaning and Language: it's all in the Mind Many theories of meaning are contextualist and proffer rules that connect sentence type and context of use to referents of singular terms (such as egocentric particulars), truth-values of sentences and the force of utterances and other linguistic acts.
Context, Background, Meaning - Part I
I. The Meaning-Egg and the Context-chicken Did the Laws of Nature precede Nature or were they created with it, in the Big Bang In other words, did they provide Nature with the context in which it unfolded Some, like Max Tegmark, an MIT cosmologist, go as far as to say that mathematics is not merely the language which we use to describe the Universe - it is the Universe itself.
Common Problems with Psychological Laboratory Tests
Psychological laboratory tests suffer from a series of common philosophical, methodological, and design problems. A. Philosophical and Design Aspects Ethical â€" Experiments involve the patient and others.
Car Insurance: Driving on the Moon
The Lunar Roving Vehicle (LRV) was developed to ease the burden on astronauts encased in their bulky suits. It was deployed in three of the latter Apollo missions (Apollo 15, 16 & 17). With a top speed of barely 10mph and a total range of around 70 miles it sounds underwhelming.
Interesting Facts About Reptiles
This article illustrates the amazing diversity found within the animal kingdom. Below, I have compiled what I feel are some of the most interesting facts about reptiles and their behavior. Interesting Reptile Facts There are more than 8,000 species of reptiles on the planet, and the live on every continent except Antarctica (where it is too cold).
Butterfly Kits for School and Home
What exactly are butterfly kits and what do you do with them I guess most children want to 'grow their own butterflies' and I suspect a good many adults would like too as well (I'm putting my hand up in the air unashamedly at this point).
Parts Of My Chariot
Once when I was flying, I happened to glance over a magazine, which had aircraft photographs. There were many of them and all were different in some or the other way. Some were big while others were small.
How To Dispose Electrical Items
Article At times we find ourselves in situations where we can't get rid of certain things in life and electrical items are one of them. We tend to buy some just for the sake of buying it and sometimes for its purpose.
How To Cut Cost On Repairing Electronic Items
As you all know that pace of our life has increased and we want everything to be done quickly. In olden days may be time did not play an important role as much as I does today. Everybody is in a hurry to reach somewhere, to see something.
When is the Next Full Moon, and Will it be Blue?
We earthlings love to look up at the moon. So much does the moon enamor us; we write movies, songs and poems by the droves that contain the name of the earth's super satellite. A case in point is the fact that one of the biggest selling record albums of all time is Pink Floyd's "Dark Side of the Moon.
Arthur C. Clarke: Brilliant Visions But Bad Scientific Blunders
Arthur C. Clarke, who died on March 19 at age 90, was one of the most popular science fiction writers of the 20th century. He is best known for his novel 2001: A Space Odyssey(1968). Its film version was directed by Stanley Kubrick.
Elephant Behaviour
Elephants are very social animals. Elephants travel in herds, containing about 6 to 30 individuals. The herd is made up of the oldest female (the matriach), females and their offspring. The African elephant is the largest living land mammal, one of the most impressive animals on earth.
Science and Environment: From Nothing, to Thing, to Something
Almost 55 years have passed since the publication in Nature of Francis Crick and James Watson's description of the structure of DNA. It was on February 28, 1953, that the two Cambridge colleagues actually pulled together the crystallographic and chemical data to form the original model of the double helix.
What About Gallstones
AMONG the more common surgical operations performed in the United States are those in which the gallbladder is removed because of stones. In fact, gallstones rank fifth among the reasons why people are hospitalized in the States.
Homeschooling Tips For Parents - How To Make Homeschooling Easier
Homeschooling, being responsible for the education of your child is not as easy as it may seem. It is true that you have more freedom to schedule your child's schooling, but the responsibility must not be underestimated.