Leidsid 33 sarnast õppematerjali, mis on seotud failiga "Accidental discovery - Radioactivity ". Need materjalid aitavad sul teemat sügavamalt mõista.
left, radioactivity, atom, laade, particles, discovery, materials, decay, atoms, than, stable, alpha, completely, paper, beta, gamma, reduced, substantial, such, thick, layer, lead, becquerel, failed, cloudy, weather, drawer, later, there, image, nearby, plate, without, exposure, light, works, science.............................................3 What is nuclear energy?...................................................................................................................3 What is nuclear fusion?....................................................................................................................4 What is nuclear fission?...................................................................................................................4 What is radioactive decay?..............................................................................................................5 History of nuclear power......................................................................................................................6 Nuclear power today.............................................................................................................................7 The future of nuclear power.......................................................................
left on the lights, the TV, and stereo even when she had her I-Pod earbuds on. She took lots of very long, hot showers. She never walked anywhere, but got rides from her mom in a big SUV. She couldn't be happy unless she was using all the energy she possibly could for all the stuff around her. Her friend, Les, didn't like to use any energy at all. He walked to school, read books instead of watching TV, played the trumpet instead of Guitar Hero, and turned off the lights anytime he left a room. Then one evening, there was a power outage. The lights went out, the TV turned off, and everything became very quiet. Jules became very upset, and quite scared. She couldn't do anything that she wanted to do. She didn't think she could survive. Meanwhile, Les didn't seem to mind at all. He was able to light a few candles and he could still read his books, practice his trumpet, and hang out and play cards with his family.
The last supernova in our own galaxy exploded in 1604, rivaling Jupiter's brightness in the night sky and deeply impressing Johannes Kepler, the pioneering astronomer. A nearby supernova--within a few light-years--would bathe the Earth in lethal radiation. Yet the legacy of supernovas is as close as our own bodies. The carbon in our cells, the oxygen in the air, the silicon in rocks and computer chips, the iron in our blood and our machines--just about every atom heavier than hydrogen and helium--was forged inside ancient stars and strewn across the universe when they exploded billions of years ago. Eager to understand our origins and, in some cases, simply wild about things that go bang, astronomers have been struggling for decades to understand why stars that shine peacefully for millions of years suddenly blow up. Lately they've had two big breaks. One is a revelation about potent blasts of high-energy gamma rays that come from distant points in the heavens
image down onto a viewing surface. Giovanni Battista Della Porta in his 1558 book Magiae Naturalis recommended the use of this device as an aid for drawing for artists. First photographs taken with camera obscura were mostly landscapes, the reason for that was a long exposure time. And because landscapes do not move it was a perfect option. They were also used to take family photos or portraits, but it worked a little bit differently than it does nowadays. For example, you had to stay still for a long time for it not to turn out foggy. The camera was also used to capture historical events. Nowadays you can use a camera for everything; you don’t have to wait for it to focus or anything. You just need to press the button and its ready to go. You can take photos of people, make videos or art. Some people use cameras only for collecting purposes. Today the photography is worn out for countless carried away about this art and
Blues-rock acts that pioneered the sound included Cream, The Jimi Hendrix Experience, and The Jeff Beck Group Cream, in songs like "I Feel Free" (1966) combined blues-rock with pop and psychedelia, particularly in the riffs and guitar solos of Eric Clapton Jimi Hendrix produced a form of blues-influenced psychedelic rock, which combined elements of jazz, blues and rock and roll Even The Beatles attempted to produce songs in the new hard rock style, trying to create a greater level of noise than The Who, from The Beatles (1968) (known as the "White Album") onwards, beginning with "Helter Skelter" Cream Cream were a 1960s Cream - Sunshine of Your British rock supergroup Love http consisting of ://www.youtube.com/watch?v=Cqh5 bassist/vocalist Jack Bruce, guitarist/vocalist Eric Clapton, and drummer Ginger Baker Their blues-rock improvisation was a major factor in the development of the genre. Expansion (1970s)
do it, enabled us to make significant changes. His work has enabled us to gain significant competitive differentiation and advantage" -LAURENCE HOF, Vice President, Relationship Consulting, Advanta Corporation "This will help executives make better decisions and use their influence wisely ... Robert Cialdini has had a greater impact on my thinking on this topic than any other scientist." -CHARLES T. MUNGER, Vice Chairman, Berkshire Hathaway, Inc. If you're wondering why of Latin America, the Far East, and Central Europe. you should buy this new edition of Influence: o More neuroscience evidence of how the influence process works is inte-
" --Phil Town, New York Times bestselling author of Rule #1 "The 4-Hour Workweek is a new way of solving a very old problem: just how can we work to live and prevent our lives from being all about work? A world of in nite options awaits those who would read this book and be inspired by it!" --Michael E. Gerber, founder and chairman of E-Myth Worldwide and the world's #1 small business guru "Timothy has packed more lives into his 29 years than Steve Jobs has in his 51." --Tom Foremski, journalist and publisher of SiliconValleyWatcher.com "If you want to live life on your own terms, this is your blueprint." --Mike Maples, cofounder of Motive Communications (IPO to $260M market cap) and founding executive of Tivoli (sold to IBM for $750M) "Thanks to Tim Ferriss, I have more time in my life to travel, spend time with family, and write book blurbs. This is a dazzling and highly useful work." --A. J. Jacobs, editor-at-large of Esquire
1. FIRST SIGHT My mother drove me to the airport with the windows rolled down. It was seventy-five degrees in Phoenix, the sky a perfect, cloudless blue. I was wearing my favorite shirt -- sleeveless, white eyelet lace; I was wearing it as a farewell gesture. My carry-on item was a parka. In the Olympic Peninsula of northwest Washington State, a small town named Forks exists under a near-constant cover of clouds. It rains on this inconsequential town more than any other place in the United States of America. It was from this town and its gloomy, omnipresent shade that my mother escaped with me when I was only a few months old. It was in this town that I'd been compelled to spend a month every summer until I was fourteen. That was the year I finally put my foot down; these past three summers, my dad, Charlie, vacationed with me in California for two weeks instead. It was to Forks that I now exiled myself-- an action that I took with great horror
head, won the battle of Midway, led to cruel Allied defeats in North Africa, and broke up a vast Nazi spy ring. • How one American became the world's most famous codebreaker, and another became the world's greatest. • How codes and codebreakers operate today within the secret agencies of the U.S. and Russia. • And incredibly much more. "For many evenings of gripping reading, no better choice can be made than this book." —Christian Science Monitor THE Codebreakers The Story of Secret Writing By DAVID KAHN (abridged by the author) A SIGNET BOOK from
Estonia is situated on the southern shore of the Gulf of Finland, between the Baltic Sea and Lake Peipsi. The country is populated by Estonians who belong to the Western Finnish group of nations, a branch of the Finno-Ugric stem, and speak the Estonian language. Estonia is the northernmost of the Baltic States. From west to east the length of the country is 360 kilometres and the width, from north to south, is 255 kilometres. The area is 45,227 square kilometres of which more than 4,000 square kilometres are made up by islands and islets (over 1,000); there are more than 1,400 lakes that form nearly 5% of the total area. More than 40% of the entire area is woodland. The country is flat; the average elevation is 50 metres above sea level. The highest peak, Suur Munamägi rises to only 317 metres. High limestone features characterise the north of the country, while the south has a drumlin terrain. The
Alphabetic writing emerged in Egypt about 5,000 years ago. The Ancient Egyptians would often write on papyrus, a plant grown along the Nile River. At first the words were not separated from each other (scriptura continua) and there was no punctuation. Texts were written from right to left, left to right, and even so that alternate lines read in opposite directions. The technical term for this type of writing is 'boustrophedon,' which means literally 'ox-turning' for the way a farmer drives an ox to plough his fields. 1/15 Scroll Egyptian papyrus showing the god Osiris and the weighing of the heart.
Mr. Bingley may like you the best of the party." "My dear, you flatter me. I certainly have had my share of beauty, but I do not pretend to be anything extraordinary now. When a woman has five grown-up daughters, she ought to give over thinking of her own beauty." "In such cases, a woman has not often much beauty to think of." "But, my dear, you must indeed go and see Mr. Bingley when he comes into the neighbourhood." "It is more than I engage for, I assure you." "But consider your daughters. Only think what an establishment it would be for one of them. Sir William and Lady Lucas are determined to go, merely on that account, for in general, you know, they visit no newcomers. Indeed you must go, for it will be impossible for us to visit him if you do not." "You are over-scrupulous, surely. I dare say Mr. Bingley will be very glad to see you;
alternating current into direct voltage or direct current. It is also applied in detectors, which find the signals in the noisy operation conditions. The third application is in switching circuits because an ideal rectifier acts like a perfect conductor when forward biased and lik a perfect insulator when reverse biased. 7) A power diode is more complicated in structure and operational characteristics than the small signal diode. The forward bias characteristic of the power diode is approximately linear, which means that the voltage drop is proportional to the omic resistance and to the current. The rated currents of power diodes are thousands of amperes and the area of the pn junction may be tens of square centimeters. In the case of power diode, the additional n- layer exists between these two layers, which is termed as a drift region. This layer can be quitewide for the diode
......127 Going Beyond Limitation...........................................................................128 The Joy of Being.........................................................................................130 Allowing the Diminishment of the Ego......................................................130 As Without, So Within................................................................................132 Chapter Eight The Discovery of Inner Space - 135 Object Consciousness and Space Consciousness.......................................137 Falling Below and Rising Above Thought.................................................138 Television...................................................................................................139 Recognizing Inner Space...........................................................................141 Can You Hear the Mountain Stream? ...................................................
or scarring brain tissue). Prior to the development of modern technology, one of the most common ways to study the brain was case study. Often case studies provide researchers with a situation that they could never ethically reproduce in a laboratory. One of the most famous case studies of how brain damage can affect behavior is the study of Phineas Gage by Dr John Harlow. Gage was in a serious accident, where a metal pole pierced his skull and brain. Luckily he survived, losing vision in his left eye. He had no difficulty with speech or language, but the balance between his intellectual abilities and emotional control had been destroyed. He became highly agitated and irrelevant, often impatient and rude. Study to his frontal lobe provided evidence that the brain affects personality and social behaviors. Discuss ethical considerations related to research studies at the biological level of analysis. In case studies for example, the researcher often obtains deeply personal information,
Under surface pressure and temperature conditions, lighter hydrocarbons methane, ethane, propane and butane occur as gases, while pentane and heavier ones are in the form of liquids or solids. However, in an underground oil reservoir the proportions of gas, liquid, and solid depend on subsurface conditions and on the phase diagram of the petroleum mixture. An oil well produces predominantly crude oil, with some natural gas dissolved in it. Because the pressure is lower at the surface than underground, some of the gas will come out of solution and be recovered (or burned) as associated gas or solution gas. A gas well produces predominantly natural gas. However, because the underground temperature and pressure are higher than at the surface, the gas may contain heavier hydrocarbons such as pentane, hexane, and heptane in the gaseous state. At surface conditions these will condense out of the gas to form natural gas condensate, often shortened to condensate
the thought that each minute gone by made it nearer the time when he would come. There was a slow smiling air about her, and about everything she did. The drop of a head as she bent over her sewing was curiously tranquil. Her skin - for this was her sixth month with child - had acquired a wonderful translucent quality, the mouth was soft, and the eyes, with their new placid look, seemed larger darker than before. When the clock said ten minutes to five, she began to listen, and a few moments later, punctually as always, she heard the tires on the gravel outside, and the car door slamming, the footsteps passing the window, the key turning in the lock. She laid aside her sewing, stood up, and went forward to kiss him as he came in. "Hullo darling," she said. "Hullo darling," he answered. She took his coat and hung it in the closer. Then she walked over and made the drinks, a strongish
currently known as russet. Russet appears to be due to a recessive mutation that causes black pigment (eumelanin) to gradually fade to a minimal amount while leaving red pigment (phaeomelanin)unaffected. Russet kittens resemble tabbies at birth, but have pink noses and paw-pads, pale fur around the pads and genitalia and a pale tail-tip - all of which would be dark in tabbies. The muzzle and fur around the eye is ivory. The back is solidly dark rather than ticked, becoming pale ivory halfway down the flanks. The back becomes more ticked appearance, almost a saddle, as kittens undergo the colour change and the face becomes reddish. By age two, they may resemble a red Burmese. It differs from amber as ambers have dark noses and paw-pads. Non-agouti (solid) amber kittens are very dark with a dark face that is last to go red while russet kittens have off-white faces (possible due to Burmese sepia gene in the mix), which are
The only inhabitants were dark-skinned people who were still living in a Stone Age. Their only weapons were stone knives, simple spears and boomerangs. They raised no crops and had no herds of tame animals. For food they hunted and fished and gathered wild fruits and nuts. But their tribes had wery well-worked-out customs. A few aborigines still live in the emptier part of the continent and follow the thousands-of-years-old customs of their ancestors. The Discovery of Australia Duch sailors stopped at several places on the northern and western coasts in the 1600s. They brought back word that the land was "of very little use". No wonder they had that idea. The northern shores of Australia are near enough to the equator to be very hot. They get a great deal of rain. The hot, wet climate is one that white people cannot stand well. Much of the western coast is dry and barren. There is a great desert in Australia, and it comes down to
1 The film was very ________________________ and not at all boring. 2 The party was very ________________________. Nobody wore casual clothes. 3 Heavy metal music is so ________________________. Can't you listen to something quiet? 4 We bought a ________________________ pizza because the restaurant was expensive. 5 These trousers are too ________________________. I need some bigger ones! 6 He's a very _____________________ basketball player and so scores more points than the short ones. 7 The rest of the flat is neat but her room is very ________________________. 8 It was a ________________________ thing to do, but he isn't very clever. 9 This test is ________________________. I want a fair one! 10 Don't laugh. This matter is not ________________________. It's very serious. Marks: /10
Cary Taylor found excuses to celebrate, no matter how small and inconsequential. I'd always considered it part of his charm. "I'm sure drinking the night before starting a new job is a bad idea." "Come on, Eva." Cary sat on our new living room floor amid a half-dozen moving boxes and flashed his winning smile. We'd been unpacking for days, yet he still looked amazing. Leanly built, dark-haired, and green-eyed, Cary was a man who rarely looked anything less than absolutely gorgeous on any day of his life. I might have resented that if he hadn't been the dearest person on earth to me. "I'm not talking about a bender," he insisted. "Just a glass of wine or two. We can hit a happy hour and be in by eight." "I don't know if I'll make it back in time." I gestured at my yoga pants and fitted workout tank. "After I time the walk to work, I'm going to hit the gym." "Walk fast, work out faster
seem to have travelled in the back of a lorry, presumably illegally. material for the listening tasks is on shapes into clay tablets to represent the Solutions MultiROM. the tokens. Now one tablet could 4 Students' own answers · Reading: Elicit strategies for contain more than one word. dealing with the true / false task. 5 See transcript Remind the students to identify Originally, these pictures simply represented whole concepts such as
CHAPTER 1 GETTING TO KNOW THE TOEFL WHAT IS THE TOEFL? The TOEFL is a comprehensive English language examination required by more than 3,000 colleges and universities in the United States, Canada, and other parts of the world. In addition, foreign born professionals frequently need a TOEFL score for certification to practice their profession in the United States or Canada. The TOEFL is a timed test that consists of the three sections listed here. THE TOEFL Section 1 Listening Comprehension 50 questions
These first paintings were made by limners and artisans without formal training and were based on what was popular in England during the Tudors. The paintings are technically unskilled, strongly patterned, flat and linear. Spanish painting in America was mostly religious. In C18, painting was a luxury and necessitated wealth that had by then become available. Portraitures remained at the forefront because the rich could thusly display their status and because it was less "frivolous" than other forms of painting. In early-C18, Baroque was imitated (handsome settings, rich chiaroscuro, rich color and painterly execution). Paintings became gradually more elaborate. During mid-C18, the new immigrants introduced the style of Rococo (gracious, charming and pretty). Exemplary artist. John Singleton Copley (late-C18). He was self-taught and pursued truth in the characters of his sitters and their surroundings. He emphasized the hands of his sitters
These first paintings were made by limners and artisans without formal training and were based on what was popular in England during the Tudors. The paintings are technically unskilled, strongly patterned, flat and linear. Spanish painting in America was mostly religious. In C18, painting was a luxury and necessitated wealth that had by then become available. Portraitures remained at the forefront because the rich could thusly display their status and because it was less "frivolous" than other forms of painting. In early-C18, Baroque was imitated (handsome settings, rich chiaroscuro, rich color and painterly execution). Paintings became gradually more elaborate. During mid-C18, the new immigrants introduced the style of Rococo (gracious, charming and pretty). Exemplary artist. John Singleton Copley (late-C18). He was self-taught and pursued truth in the characters of his sitters and their surroundings. He emphasized the hands of his sitters
designed and built an all-wood, tail- laminar flow characteristics (see their airframes is so straightfor- less glider, the S-1 . . . the crash of his classified ad in this issue under ward that there is little reason not which he fortunately survived. "Books/Films, etc."). to do i t . . . if for no other reason Channelled into physics by his gov- As a veteran EAA Technical than for peace of mind. In his arti- ernment, he was not able to get Counselor, Alex often recommends cle, he tells builders of composite back to personal flying until coming that builders load test their home- aircraft why a load test is desirable, to the U. S. and ultimately discover- builts before flying them. He how to conduct it and, very impor- ing EAA and homebuilding
here" "Yes, my dear," replied Mrs. Allen, with perfect serenity, "it is very uncomfortable indeed." In Bath, Catherine met a young clergyman Henry Tilney. "Have you been long in Bath, madam?" "About a week," replied Catherine, trying not to laugh. "Really!" with affected astonishment. "Why should you be surprised, sir?" "Why, indeed?" said he, in his natural tone "but some emotion must appear to be raised by your reply, and surprise is more easily assumed, and not less reasonable than any other." Mr Tilney was very charming, he left a good impression on Catherine and she quickly fall for him. Catherine also met Isabella Thrope, they became best friends. Isabella introduced her the social world of Bath with its balls, shows, fashion, dances and gossip. Soon Catherine's brother James Morland and Isabella's older brother James Thrope arrived in Bath. Isabella fell in love with James and John liked Catherine very much. "I will drive you up Landsdown Hill tomorrow
Sunflower head displaying florets in spirals of 34 and 55 around the outside The florets within this cluster(kobar, kimp, klaster, parv ; kobarasse kogunema) are arranged (korraldatud, ettekavatsetud)spirally(spiraalselt). Typically each floret is oriented(suunitlusega) toward(poole) the next by approximately(umbkaudu, ligikaudu) the golden angle(parima nurga alla), producing a pattern(muster, lõikeleht, seaduspärasus) of interconnecting spirals where the number of left spirals and the number of right spirals are successive Fibonacci numbers.(fibonacci arv/ rida) Typically, there are 34 spirals in 1 direction(suund, juhatamine, juhis) and 55 in the other; on a very large sunflower you may see 89 in one direction and 144 in the other. The disc florets mature(täiskasvanud ; valmima, kääritama ) into what are traditionally called "sunflower seeds", but are actually the fruit (an achene) of the plant. The true
either from Britain or France. It was especially a poignant time for Africa, as then British Prime Minister Harold McMillan articulated his now famous “winds of change” sweeping Africa. We had high hopes for Africa, for the Black race, that the insidious imposition of foreign rule on us, the looting of Africa’s natural resources by our colonial masters accorded us would be things of history. That is more than forty years ago. Unfortunately, the promise of independence has not been fulfilled. Today, Africa has become more desolate; there is more starvation, diseases and non-provision of essential services than when we got our independence. There are all kinds of wars in Africa than the rest of world put together. The majority of so-called Africans leaders want to stay in power until the day their bodies are put in the grave
transformed as their songwriting grew in sophistication. The group came to be perceived as the embodiment of progressive ideals, seeing their influence extend into the social and cultural revolutions of the 1960s. With an early five-piece line-up of Lennon, McCartney, Harrison, Stuart Sutcliffe (bass) and Pete Best (drums), The Beatles built their reputation in Liverpool and Hamburg clubs over a three-year period from 1960. Sutcliffe left the group in 1961, and Best was replaced by Starr the following year. Moulded into a professional outfit by music store owner Brian Epstein after he offered to act as the group's manager, and with their musical potential enhanced by the hands-on creativity of producer George Martin, The Beatles achieved UK mainstream success in late 1962 with their first single, "Love Me Do". Gaining international popularity
them jump. When James was 18 he decided to become a professional instrument- maker. He could not find anyone to teach him, so he went to London. After a year James returned to Scotland where he became mathematical instrument maker to Glasgow University. He also made musical instruments organs, violins, flutes and guitars. Then he began to work on steam engine. He built a new type of engine, with a separate consider and an air pump. It was great discovery. Watt's engine became the basics of industry. He invented a copying machine. The unit of electric power or activity was named 'a watt' after him. He retired when he was 64. His last invention was a machine for copying sculptures. He had many friends. He died in 1819. A monument was erected to him. 4) THANKSGIVING In the United States, the fourth Thursday in November is called Thanksgiving Day. On this day Americans give thanks for their blessings they have enjoyed during the year
4 votes Photocopiable © Oxford University Press 1 Maturita Solutions Upper-Intermediate Workbook Key 1G Magazine article page 10 1 1 Introduction: C 2 Background information: A 3 Main events: D 4 Conclusion: B 2 1 One afternoon, at the time, when I finally reached safety, after that day 2 and fast! The rock was now more than a kilometre out to sea! After that day, I always checked the times of the tides before I went swimming! I'd never been so exhausted in my life! 3 exhausted, fantastic 4 Only when I woke up ... 3 1 Had the distance been twenty metres further, I wouldn't have made it. 2 Never in my life had I been so exhausted. 3 So tired was I that I fell asleep. 45 Students' own answers Photocopiable © Oxford University Press 2
(space) 7. Not only would a solar powered vehicle be safe, it would also make use of one of the planet's greatest natural resources. (energy) COMPUTERS 1. I'm terribly sorry I'm late but traffic congestion in and around the city just keeps getting worse. 2. The recent increase in unemployment in the area can be explained by the new automated car plant that has just opened. 3. After little more than forty years, we have seriously polluted the final frontier with space junk and other debris. 4. We live in a consumer society where we find it easier to throw away something that is broken rather than get it fixed. 5. Many teenagers would prefer to go out with their friends for fast food. 6. Looking out the aeroplane window I could see that the unsightly urban sprawl of the city had spread far into the desert. 7
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