Solar System’s Water is Older Than the Sun

      Next time you’re swimming in the ocean, consider this: part of the water is older than the sun.
      So concludes a team of scientists who ran computer models comparing the ratios of hydrogen isotopes over time. Taking into account new insights that the solar nebula had less ionizing radiation than previously thought, the models show that at least some of the water found in the ocean, as well as in comets, meteorites and on the moon, predate the sun’s birth.
      The only other option, the scientists conclude, is that it formed in the cold, intersteller cloud from which the sun itself originated.
      The discovery, reported in this week’s Science, stems from the insight of lead author Lauren Ilsedore Cleeves, a doctoral student at the University of Michigan, who realized that planet- forming disks around young stars should be shielded from galactic rays by the strong solar winds, dramatically altering the chemistry occurring inside the disks, said Conel Alexander, with the Carnegie Institution of Washington.
      “The findingX makes it quite hard for these regions in the disk to synthesize any new molecules. This was an ‘aha’ moment for us - without any new water creation the only place these ices could have come from was the chemically rich interstellar gas out of which the solar system formed originally,” Cleeves wrote in an email to Discovery News.
      “It’s remarkable that these ices survived the entire process of stellar birth,” she added.
      The finding has implications for the search for life beyond Earth, as water is believed to be necessary for life.
      “If the sun’s formation was typical, interstellar ices - including water - are likely common ingredients present during the formation of all planetary systems, which puts a wonderful outlook on the possibility of other life in the universe,” Cleeves said.
      In addition, it’s not just water that likely survived the solar system’s birth.
      “The same must be true for the organic matter that we know is present in molecular cloud ices. So I think this strengthens the case that we have interstellar organic matter in meteorites and comets too,” Alexander wrote in an email to Discovery News.

                                                                                          Available in: http://news.discovery.com

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English for Adults & Seniors!

Learning a language isn’t only for the young! It’s for everyone and if you are an older learner,maybe 40+ to 70+ then joining an English Language Course in an environment with people in similar age groups is a greatway to do it.

When you join a course at one of the International Schools you will find that approximately more than 20% of our students are aged 30 to 44 and a further 32% are aged 45 to 75 - sometimes older. You aremore than likely to find yourself in a class with people of a similar age;

Some mature students choose Business English courses for their working needs but many more join standard General English courses or the Intensive English Mini-Group courses. Courses like these help you to combine your language course with a holiday and you can make your own afternoon programme or join social programmes which are designed to have a variety of different activities suitable for all the age groups at the school. The programme changes every week and you can see samples of all the different activities on the social programme pages or on Facebook pages.

Mature learners will feel safe joining one of the International Schools. You will find others of a similar age in your class at all times of year

The International School ( I S ) accommodation is also suitable for older clients - you can choose froma homestay with a private bathroom, an apartment, but most convenient of all is Club IS Hotel which is opposite the school. Club IS is for mature individuals who are studying at the school. Classes are always organised according to level and according to age groups.

(Adapted from: < http: www.tisenglish.co.uk /courses-for-adults- seniors>)

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Text:

How to get the most enjoyment from your
color TV set


Your new color TV incorporates a host of features designed to give you excellent performance. Besides, this model utilizes a highly sophisticated control microprocessor that can give you unprecedented convenience and control in the areas of picture adjustment, channel tuning, monitor operation, on-screen information, and remote control.

We therefore strongly urge that you read all of these instructions before using yourTV for the first time.

Installation

Antenna

Unless your TV is connected to a cable TV system, or to a centralized antenna system, a good outdoor color TV antenna is recommended for the best performance. However, if you are located in a strong signal area that is free from interference and ghost conditions (multipath), an indoor antenna may be sufficient. The two pole antenna packedwith this set is for your convenience only. It is not capable of providing you with the sharp detail and rich color that this televisionwas designed to display.

Location

Select an area where sunlight or bright indoor illumination will not fall directly on the picture screen. Also, be sure that the location selected allows a free flow of air to and fromthe perforated back cover of the set.

Note

Never remove the back cover of the set. This can expose you to very high voltage and other hazards.

If the set does not operate properly, unplug it and call your dealer or service shop.

(Fonte: Color Television – Operating Instructions.)