Posts Tagged ‘astronomy’

Check Out The Alternative Energy Solutions For Your Home.

Sunday, July 25th, 2010

If you want to save money on your electricity bills then you may be looking for alternative energy solutions. Fluctuating energy prices and a difficult economic climate are leading many people to look for savings on their household costs. There are several ways to change your energy supply and save money.

Besides saving on energy costs, another concern for many people is environmental damage and climate change. If you are looking for a way to reduce your carbon footprint then there are two main areas to look at with regard to your house. Energy conservation is important. This can be achieved by using wind power or having quality insulation so that you can turn your boiler down. The other consideration is installation of a green energy technology.

There is no reliable average figure for energy savings as there are too many variables for each case. However you can get a good idea of the possible savings you could make by using an energy calculator. There are many websites which have them and you just need to fill in the information about your house and electricity consumption. It will use this information to work out how much money you can save by using different technologies. This may help you decide which type of sustainable technology to install and how much money it is worth investing.

The two most popular forms of sustainable home energy are wind and solar power. There are advantages to both but the location of your house will probably be the deciding factor because the weather is so important. For example, to make use of solar power you really need many hours of sunlight each day.

Solar panels are made from a series of photovoltaic cells these are what change the sunlight into electricity. They have to be placed in the best place to capture sunlight which is usually on the roof of your house. Many people are avoiding solar power because they have heard that it is very expensive to install. This used to be true but competition among green power companies and the changes in technology which have taken place have lowered prices significantly.

You may have decided to install a wind turbine on your property. These are a clean and reliable source of power as long as you live in a place with sufficient wind. The installation costs for these have reduced dramatically in the last thirty years. Advances in the technology have also made the machinery more efficient so that it is getting more power from the same amount of wind.

It is now becoming popular to install these technologies yourself. There are do it yourself kits available with everything you need. These are a lot cheaper than having a company carry out the installation. You can do it for even less money by building the solar panels or turbine from scratch. Most of the necessary parts can be purchased from hardware stores or on the internet. There are also many websites with information on the construction process and how to calculate the sizes of panels and turbines you will need.

The internet has many websites with advice on choosing a technology. Investigating alternative energy solutions has never been easier.

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Calendars And How To Understand Them

Wednesday, July 14th, 2010

The calendar is such a routine, everyday thing, but how much do you actually know about the operation of it. Why is it like that?

A DAY: The Earth turns at a reasonably steady speed about the imaginary line running between the North and South Poles named the Earth’s Axis. The time it takes to spin once is called a ‘rotation’ and this takes just under twenty-four hours. Nevertheless, because the Earth is constantly travelling around the Sun, the precise time from noon one day to noon the next is 3 minutes 56 seconds longer and this makes a day almost precisely twenty-four hours in length.

The actual time from noon to noon differs depending where the Earth is on its celestial course around the Sun, but if you average the days in a year out, it comes to exactly twenty-four hours.

A YEAR: All nine planets in our solar system move around the Sun in approximately perfectly circular routes called orbits. Each trip around the Sun is called a revolution and all the planets orbit around the Sun in the same direction. The course the Earth takes can be verified by noting its location against the background stars.

Since you cannot see the Sun and the stars at the same time, it is obligatory to note the location of the Sun in the morning and the see which stars appear there in the night. You will see that the Sun appears to pass through the twelve constellations of the zodiac during a year.

Earth’s trip around the Sun, which seems like the Sun traveling through the zodiac takes about 365.25 days. This is different from year to year, so astronomers add or delete a second in some years to keep their time correct with the Earth’s motion.

THE SEASONS: The seasons indicate the change in the pattern of daylight over the span of a year. Because the Earth is tilted off centre, different parts of it get different amounts of sunlight on different stages of its path around the Sun, a path that we call a year. So, between approximately the 21st September and late March, the Earth’s Northern Hemisphere is tilted away from the Sun, which produces Autumn and Winter, giving less than twelve hours of daylight per day.

From April to the 20th September, the Northern Hemisphere enjoys more than twelve hours of daylight a day, producing Spring and Summer. The exact opposite occurs in the Southern Hemisphere.

The Equinoxes take place at the points in the year when there is exactly twelve hours of sunlight and darkness in the day. So, the vernal or Spring equinox is on or around the 21st March and the autumnal equinox is on or around the 21st September. Summer officially commences on the day with the greatest amount of daylight, the 21st June or summer solstice.

The winter solstice occurs on the shortest day, the 21st December. ‘Solstice’ is a combination of two words meaning ’sun standing still’ and the days are so called because they are the days when the ostensible movement of the Sun reaches its extremes and reverses direction again.

Owen Jones, the author of this article, writes on many subjects, but is currently involved with researching Franklin planner pages. If you have an interest in calendars, organizers or promotional calendars, please go over to our website now at Promotional Desk Calendars

The Chinese Lunar Calendar

Saturday, February 27th, 2010

Prior to their adoption of the Western solar calendar system, the Chinese almost exclusively followed their own lunar calendar for working out the times of planting and harvesting and festival holidays. Although people in China today use the Western calendar for almost all business, governmental and practical matters of daily life, the old system still serves as the basis for determining many recurring holidays. This coexistence of two calendar schemes has long been accepted by the people of China.

However, this does not only happen in China, it also happens in most other Eastern countries, like Thailand, and most Arabic countries.

A lunar month is calculated by measuring the period of time needed for the moon to finish its full cycle of 29 and a half days, a standard that makes the lunar year a full 11 days shorter than its solar counterpart. This disparity is made up every 19 years by the addition of seven lunar months.

The 12 lunar months are further divided into 24 solar divisions characterized by the four seasons and times of heat and cold, all of which bear a close relationship to the yearly cycle of agricultural work.

The Chinese calendar - very much like the Hebrew calendar- is a combination of the solar and lunar calendars in that it attempts to have its years coincide with the tropical year and its months coincide with the synodic months. It is not surprising that a few similarities exist between the Chinese and the Hebrew calendar.

For instance, an average year has 12 months, a leap year has 13 months. An ordinary year has 353, 354, or 355 days, a leap year has 383, 384, or 385 days. When working out what a Chinese year will be like, one needs to make a number of astronomical calculations.

First of all, you have to work out the dates for the new moons. In these instances, a new Moon is the completely black Moon (that is to say, when the Moon is in conjunction with the Sun), not the first visible crescent, as is used by the Islamic and Hebrew calendars. The date of a new moon is then the first day of a new month.

The reason why the majority of countries which had their own calendars had to dump them in favour of the Western, Julian calendar that we use today, is business. First the British and then the Americans ran international business and they used the Julian calendar.Anyone who sought to work with them had to follow suit. This is why national policy often varies from local custom in Third World countries.

The government desires to deal on the International markets, but the ordinary family in the country can not. So, the government adopted the Julian calendar but the people only pay lip service to it. I live in Thailand and people here do not even use the 24 hour day divided into two halves. Their day has four sections of six hours each and the first part starts at 6AM, not midnight. Therefore, they have four 4 o’clocks a day, for example but no 7 o’clocks. They are also 543 years ahead of us, although this is more common, for example in Muslim countries.

Fascinated by astronomy, please pop along to our website at: Astronomy Today

Astronomy - An Introduction

Wednesday, January 6th, 2010

Despite the fact that astronomy is the oldest science, it is still at the forefront of not only scientific thought, but also that of the public at large. Who hasn’t looked up at the stars while walking home late at night and wondered about something larger? Having said that though, the ancient people of definitely the northern hemisphere, but probably both hemispheres, knew the movements of the stars and planets better than the majority of us do nowadays.

They understood even then, thousands of years ago, that most stars seem to rise in the Eastern skies at night and travel on circular paths. They also noticed that some ’stars’ were ‘wanderers’ (we call them planets) and that sometimes they travelled ‘against the flow’.

They also named groups of stars that we now call constellations or even galaxies and knew that those visible in the winter were different from those seen in the summer.and that others were visible all year round. The average common man of 5,000 - 10,000 years ago almost certainly knew more about the movement of the celestial bodies than the average common man of today does. (I mean men and women here, naturally).

They learned how to calculate or at least locate the extremities of the sunrise and went to extraordinary lengths to mark those positions with huge stone structures, such as Stonehenge in the UK, probably to facilitate the location of certain positions of the sun or other planets or stars, which may have been vital to their religious beliefs or crop cycles.

In 1609, Galileo invented the first artificial device for studying the stars and planets. It was the first astronomical telescope and through it he was able to see things millions of miles away that no person had ever seen before. Because of the conclusions he came to from his observations, he had trouble with the Roman Catholic Church and was often in serious danger for his life, so radical were his discoveries.

But humankind was not to be put off, and since then we have gone on to construct ever bigger and ever better astronomical telescopes through which we can even detect radio waves, microwaves, X-rays, infrared waves and gamma waves from outer space. Forty years ago, we even travelled to our Moon. and we have sent probes to eight of the nine planets in our Solar System, as well as to quite a few comets and asteroids.

Where are we going next? That decision was always up to the government of the United States and the old Soviet Union, but now there are other players in the field. What will China or India want to explore with their possibly slightly different outlook on life? Or will it be just a question of financial benefit?

The world may be in a state of change and power may be moving from its traditional seats, but it has not lessened interest in questions that scientists think can only be answered in space. These are exciting times in the science of astronomy, but then man has always found astronomy enthralling .

Interested in astronomy, then please pop along to our website at: http://astronomy.the-real-way.com

Astronomy: Screensaver

Monday, November 23rd, 2009

Astronomy is the study of the celestial bodies. Some astrologers practice it as a serious science while for others it is an interesting hobby. For this reason, whenever an astronomy picture of the day is offered to the general public, people usually jump at the chance of looking at it. There are many of astronomical pictures to choose from, and plenty of interesting moons etc to keep people looking.

Of course ,NASA is one of the primary sources for an astronomy picture of the day. This site, NASA.gov, shows a new picture each and every day. There is also a section that shows films. These could be used to create your own photo site. For example, Saturn’s moon Enceladus was the feature with “star billing” on November 5, 2008.

The picture was taken by a passing rocket. It gets down to details the size of a bus. The ice on this moon reflects nearly 100% of all the light that hits it. Wear sunglasses. This moon is so unusual that Cassini will continue to fly by for more images later in its mission.

NASA retains an archive of all the astronomy image of the day dating all the way back to June 16 of’95. It was a ‘what if’ picture of the Earth posing as a neutron star. The picture is a computer generation. The most interesting feature is that the constellation of Orion is visible twice. Even light from behind a neutron star is visible because the dense star bends the light around it. This causes some objects to be seen twice.

The entry for September 8th,’95 was an amazing photo of the central part of the ‘Milky Way’ galaxy taken by NASA’s COBE satellite. This area is generally invisible because of the dust masking it. But COBE scans in infrared, so produced that amazing picture of our very symmetrical galaxy.

The astronomy picture of the day was identical on January 1st, 2000 and January 1st, 2001, the reason being that both dates displayed this picture is that most people considered the year 2000 to be the first year of the third millennium.

However, the third millennium actually commenced on January 1st, 2001. NASA reasoned it was just easier to just go with the flow and do it on both dates. apod.nasa.gov/apod/ap010101.html displays mankind’s view of the solar system as it progressed from mere objects circling the Earth, all the way to the ‘Big Bang’ creating the universe as we see it today.

NASA has a lot more days with their own astronomy picture of the day. Visit the web site, NASA.gov to see them.

Astronomy: pictures of the day are fascinating to vast numbers of people. If you are fascinated by astronomy, visit our website at: http://astronomy.the-real-way.com

Some Facts on Astronomy

Friday, October 30th, 2009

How much information on astronomy should there be for all the objects and phenomenon in the entire universe? Consider that there are somewhere around 1 x 10 ^22 stars in the universe, that’s a one followed by 22 zeros. Then consider that many of those stars have planets revolving around them. Then consider all the moons that orbit those planets, then the comets and asteroids, the galaxies these stars form, the nebulae and black holes and everything else out there. The amount of information and data is staggering. This article, which presents astronomy facts, certainly won’t contain every fact. But these are quite interesting facts nevertheless.

We will start by taking a look at a small section of astronomy: “the brightest stars seen from the Earth”. That is excepting the Sun which is roughly 250,000 times nearer than the next nearest star. In fact, it is so bright that when the sky is viewed from the Earth, it blinds out all the other stars in the sky during a phenomenon called daytime.

So, while reading this list, please bear in mind that according to the scale we are using, lower numbers are brighter: the Sun would be roughly -26.73, whereas the full moon is about -12.6; keeping that in mind, here are the top 5:

#5 is Vega, which means “falling eagle” in Arabic is in Lyra. It’s roughly 25 light years away and has a magnitude of 0.04.

NB: when thinking about this astronomical information, please just bear in mind that the ‘brightest from the Earth’ doesn’t mean ‘largest’ or ‘brightest’. The Sun is not the largest or brightest star in the universe or even the galaxy by any means, but it seems to be so bright to us because we are near to it compared to the other stars.

#4 Rigel Centaurus - a very bright, bluish-white supergiant star in the constellation Orion. It is a binary star, with an average apparent magnitude of 0.12. It’s scientific name is Beta Orionis. ‘Rigel Centaurus’ is Arabic for ‘the foot of the centaur’. It’s about four light years from Earth.

#3 is Arcturus. The translates as ‘guardian of the bear’ from the Greek. This star is about 37 light years away from us. It is situated in the constellation of Bootes, close to The Great Bear. It has a magnitude of 0.00

#2 Canopus - the Greek name of the pilot of the sailing ship Argo in the stories of Jason and the Argonauts, is the brightest, however, because it is 313 light years from Earth, it’s only second in this list of the five brightest stars seen from Earth. It has a magnitude of -.62.

#1 is Sirius, which translate from the Greek as ’scorching’. It’s also sometimes called the ‘Dog Star’ because it is the brightest star in the constellation of Canis Major, which means ‘The Big Dog’ in Latin. It is situated only 9 light years from Earth, which makes it easily the second closest of these top five. It has a magnitude of -1.44, which makes it very easily the brightest star that can be observed in the night sky.

These few data don’t even scratch the surface of subject of astronomy but it’s something for you to think about the next time you gaze up into the night sky.

Are you fascinated by Astronomy for Beginners? If you are then, please visait our website at http://astronomy.the-real-way.com

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