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David Copperfield was David said: "I'm David Copperfield, Copperfield His father died before he Miss Trotwood took David inside, gaveborn in a village in England your nephew". He told her everythingwas born David's mother him a hot water bath and some food.looked after him well. He As days went by, Miss Trotwood putwent to the best school in David in a good school and looked afterthe villagehim well. Miss Trotwood had a friend, When David was six years Wickerden and his daughter Agnesold, his mother married David and Agnes became great friendsa man by the name of Wickerden was a rich man but hisMurdstone. Murdstone did assistant, Micawber, was a bad man. Henot like David and David got a very important document and hedid not like him. Murdstone decided to take Wickerden's money.decided to send David to a boarding David often visited Wickerden's house.school. Next day he left his mother and One day David saw some of Wickerden'swent to live there.papers. He did not believe Micawber andHe was in boarding school for asked to see the documents. Micawbertwo years. Then he heard about his said: "David, these papers are aboutmother's death. He went home, there work and they are not important". But, he found Murdstone sitting on a chair. David understood that Micawber had aHe looked at David and said: "Your mo- bad plan against Wickerden. He wentther is dead. I have no money for your to the police and told everything. Theeducation. You must start working police took Micawber and put him intoTomorrow you will leave for London." prison.So, at the age of ten, David Copper Wickerden was happy that Davidheld was in London streets without saved his money and house. Agnes toomoney, food or home. He remembered thanked David for her father.his mother told him that in Dover lived A few years later David and Agnes, his aunt, his father's sister. David never who were in love with each other, gotsaw her. He walked to Dover to his aunt's married. They lived happily for a longhousetime.It was morning when David came tohis aunt's house. Her name was MissTrotwood. She was in the garden, whenshe saw a poor boy looking at her.She asked: "What is it boy? What doyou want? надо переводить мне надо шклууу умаля

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elena

ответ: Светимость Денеба  ≈ 80020 светимостей Солнца.

Объяснение: Дано:

Видимая звездная величина Денеба m = 1,25;

Расстояние до Денеба Sсв = 1640 световых лет.

Найти светимость звезды  Ед - ?

Вначале найдем абсолютную звездную величину (М) Денеба:

М = m + 5 - 5lgS,  здесь m  - видимая звездная величина звезды = 1,25m;  S – расстояние до звезды в парсеках (пк).

1 пк = 3,2616 световых года, следовательно, расстояние до звезды в пк  Sпк = Sсв/3,2616 = 1640/3,2616 ≈ 503 пк.  

Тогда М = 1,25 + 5 – 5lg503 = 1,25 + 5 – 5(2,7…) ≈ –7,258 m.

Теперь можно найти светимость звезды Денеб в светимостях Солнца.

Ед = (100^0,2)^(5-M) = 2,511886^(5+7,258) = 2,511886^12,258  ≈ 80020 светимостей Солнца.

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David Copperfield was David said: "I'm David Copperfield, Copperfield His father died before he Miss Trotwood took David inside, gaveborn in a village in England your nephew". He told her everythingwas born David's mother him a hot water bath and some food.looked after him well. He As days went by, Miss Trotwood putwent to the best school in David in a good school and looked afterthe villagehim well. Miss Trotwood had a friend, When David was six years Wickerden and his daughter Agnesold, his mother married David and Agnes became great friendsa man by the name of Wickerden was a rich man but hisMurdstone. Murdstone did assistant, Micawber, was a bad man. Henot like David and David got a very important document and hedid not like him. Murdstone decided to take Wickerden's money.decided to send David to a boarding David often visited Wickerden's house.school. Next day he left his mother and One day David saw some of Wickerden'swent to live there.papers. He did not believe Micawber andHe was in boarding school for asked to see the documents. Micawbertwo years. Then he heard about his said: "David, these papers are aboutmother's death. He went home, there work and they are not important". But, he found Murdstone sitting on a chair. David understood that Micawber had aHe looked at David and said: "Your mo- bad plan against Wickerden. He wentther is dead. I have no money for your to the police and told everything. Theeducation. You must start working police took Micawber and put him intoTomorrow you will leave for London." prison.So, at the age of ten, David Copper Wickerden was happy that Davidheld was in London streets without saved his money and house. Agnes toomoney, food or home. He remembered thanked David for her father.his mother told him that in Dover lived A few years later David and Agnes, his aunt, his father's sister. David never who were in love with each other, gotsaw her. He walked to Dover to his aunt's married. They lived happily for a longhousetime.It was morning when David came tohis aunt's house. Her name was MissTrotwood. She was in the garden, whenshe saw a poor boy looking at her.She asked: "What is it boy? What doyou want? надо переводить мне надо шклууу умаля
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