During the 1st century AD (year 100), glass had been invented and the Romans were looking through the glass and testing it.
They
(experiment) with different shapes of clear glass and one of their samples
(be) thick in the middle and thin on the edges. They
(discover) that if you
(hold) one of these "lenses"
over an object, the object would look larger.
The early simple "microscopes"
(be) really only magnifying glasses.
Sometime about the year 1590, two Dutch spectacle makers, Zaccharias Janssen and his father Hans
(start) experimenting with these lenses. They
(put)
several lenses in a tube and
(make) a very important discovery. The object near the end
of the tube
(appear) to be greatly enlarged, much larger than any simple magnifying
glass
(can) achieve by itself! They had just invented the compound microscope (which is
a microscope that uses two or more lenses).
Galileo
(hear) of their experiments and
(begin)
experimenting on his own. He
(describe) the principles of lenses and light rays and
(improve) both the microscope and telescope. He
(add) a focusing device to his microscope and of course
(go) on to explore the heavens
with his telescopes.
Anthony Leeuwenhoek of Holland
magnifying glasses in a dry goods store. He
(learn) how to make lenses. He
(get) very interested in lenses while working with
(become) so interested that he
(see) bacteria,
TOVAUVA
Millions of people spend their hollidays travelling. I'm not the exception. I like to travel very much. Usually I travel about 3 times a year. Terms of how many times a year I travel, depend on situation. Sometimes I leave home for a week, but more often for month. Basically I go abroad, because I really enjoy it. I think that travelling is the best way to entertain yourself and to know something interesting about places which you attend. People travel by train, plane, boat and car. In all ways travel has its advantages and disadvantages. And people choose according to their mode of transportation plans and purpose of the trip. And of course I prefer airplanes because they are more reliable. All the time I'm looking through the illuminator and I love it. I always travel with my family and friends. I love them, so that's why I like to spend my time with them.
coffee - кофе, lemonade - лимонад, kangaroo - кенгуру, giraffe - жираф, footbolд - футбол, basketboll - баскетбол, volleyball - волейбол, hockey - хоккей, champion - чемпион, medal - медаль, DOUCHE - душ, mademoiselle - мадемуазель, madam - мадам, sir - сэр, program - программа, компьютер - computer, file - файл,
manager - менеджер, pager - пейджер, tiger - тигр, euro - евро, dollar - доллар, monitor - монитор, shooter - шутер, action - экшн, businessman - бизнесмен, business - бизнес, lime - лайм, orange - оранжевый, address - адрес, London - Лондон (цепочку с городами можно продолжить), tunic - туника, music - музыка, site - сайт, Internet - интернет, second - секунда, sports - спорт, sportsman - спортсмен,