how is time measured

Answers

Answer 1

Answer:

The measurement of time began with the invention of sundials in ancient Egypt some time prior to 1500 B.C. However, the time the Egyptians measured was not the same as the time today's clocks measure. For the Egyptians, and indeed for a further three millennia, the basic unit of time was the period of daylight.

Explanation:

Since 1967, the International System of Measurements bases its unit of time, the second, on the properties of caesium atoms. SI defines the second as 9,192,631,770 cycles of the radiation that corresponds to the transition between two electron spin energy levels of the ground state of the 133Cs atom.


Related Questions

What factors contributed to the Chinese exclusion act?

Answers

Answer:

Scholars have theorized about the social factors that led to the passage of the Chinese Exclusion Act.

Explanation:

Xenophobia and a disdain that Chinese would take cheap labor jobs at the purported expense of white Americans.

who was W. E. B. DuBois

Answers

Answer:

W.E.B. Du Bois was an American sociologist, historian, author, editor, and activist who was the most important black protest leader in the United States during the first half of the 20th century. He shared in the creation of the National Association for the Advancement of Colored People (NAACP).

Explanation:

Which civilization is located between the Tigris and Euphrates rivers?

Answers

Answer:

mesopotamia

Explanation:

In the sumerian times, What did they do to solve their problems???????????

Answers

Answer:

To defend themselves, the Sumerians built walls and dug moats around their cities. By 3000 B.C.E., the solutions to the challenges faced by the Sumerians had transformed Sumerian farming villages into walled city-states.

Explanation:

Answer:

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Explanation:;klrwfnkwnsfk

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How was the Protestant reformation related to the renaissance?

Answers

The renaissance was a period of time where people started to question the Catholic Church, they felt controlled and scammed by the church and wanted to reform the church’s political and social influence. This lead to the Creation of the Protestant Church. Directly Relating the Renaissance and the Reformation.

In 1947, the Indian Independence Act separated British India into two countries, India and Pakistan. What was one consequence of this separation?
A.
India's government is based on the communist model, while Pakistan still has a monarchy.
B.
India's population is mainly Hindu, while the population of Pakistan is mainly Muslim.
C.
India has a free market economy, while the economy in Pakistan is based on socialism.
D.
India has military alliances with the United States, while Pakistan is allied with Russia.

Answers

Answer:

B.India's population is mainly hindu while Pakistan's is mainly muslim

When the United States refused to give the Philippines their independence, who led the Filipino forces in opposition to the U.S.

Answers

I believe it was Emilio Aguinaldo.

Why were New England farms fairly small?

Answers

ship building and fishing

Answer:

The farms in New England Colonies were small because the farms were small, mainly to provide food for individual families. Also these land were known for being rich in forests and fur trapping, harbors were located throughout the region. The area was not known for good farmland. So therefore they do not need much farm areas.

Explanation:

What time of year does santa come around?

Answers

Answer:

December

Explanation:

Answer: In most countries, December. it seems Santa arrives between 9:00 p.m. and midnight on Christmas Eve

Explanation:

what two events were causes of the american revolution

Answers

Answer:

The Boston Tea Party

The Boston Massacre

Explanation:

Which three states ratified the Constitution with a wide margin of votes by the end of 1787?
A.
Connecticut, Pennsylvania, Georgia
B.
Georgia, Pennsylvania, New Jersey
C.
Delaware, Connecticut, New Jersey
D.
Delaware, Pennsylvania, New Jersey

Answers

Answer:

c

Explanation:

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Answer: D trust me its the answer

Why do you think Philadelphia was one of the most popular cities amongst free African Americans? Which positive aspect of the city would have been most important to you if you had been living during this time as a freed African American?

Answers

Answer:

Explanation:

Filadelfia3​ (en inglés, Philadelphia, también apodada coloquialmente Philly) es la mayor ciudad del estado de Pensilvania, Estados Unidos. Está ubicada sobre la orilla derecha del río Delaware —poco antes de su desembocadura en la bahía de Delaware—, que la separa del estado de Nueva Jersey, y en un punto intermedio entre las importantes ciudades de Nueva York y Washington D. C. Es la quinta ciudad del país por población y la 51.ª del mundo. El condado de Filadelfia, del que es sede, tiene 1 526 000 habs. (Philadelphia City) y su área metropolitana (Valle de Delaware) alcanza los 6 millones de habs. (censo de 2014).

Es un gran centro histórico, cultural y artístico en los Estados Unidos, y de la misma forma un importante puerto industrial sobre el río Delaware, que se extiende hasta el océano Atlántico. Fundada en 1682, fue durante el siglo XVIII la ciudad más poblada de las Trece Colonias y la tercera ciudad más poblada del Imperio británico (tras Londres y Dublín), antes de convertirse provisionalmente en la ciudad capital de los Estados Unidos. Fue velozmente superada por Nueva York y le cedió su estatus de capital a la flamante ciudad de Washington D.C. Hoy, Filadelfia es la principal metrópolis del estado de Pensilvania, aunque la capital y sede del gobierno es Harrisburg.

El nombre de la ciudad, elegido por William Penn, significa "la ciudad del amor fraternal" (compuesta de philos (φίλος) "amor", y adelphos (ἀδελφός) "hermano"), pues se deseaba que fuese un refugio de tolerancia religiosa.

Establecida en 1682, es una de las ciudades más antiguas del país, y, como capital original y ciudad más grande de la época colonial, gozaba de una importancia política y social mayor que Boston o Nueva York. En 1776, el Congreso Continental de las Trece Colonias se reunió en Filadelfia y en el 4 de julio de ese año, declaró la independencia de Gran Bretaña. Quizás el ciudadano más famoso de Filadelfia fue Benjamin Franklin, escritor, científico y político.

Filadelfia es fundamental para la historia afroamericana, su gran población negra es anterior a la Gran Migración.

Answer:

(^^ I just translated theirs)

Philadelphia3 (in English, Philadelphia, also colloquially nicknamed Philly) is the largest city in the state of Pennsylvania, United States. It is located on the right bank of the Delaware River —shortly before its mouth in the Delaware Bay—, which separates it from the state of New Jersey, and at an intermediate point between the important cities of New York and Washington DC It is the fifth city of the country by population and the 51st in the world. The county of Philadelphia, where it is located, has 1,526,000 inhabitants. (Philadelphia City) and its metropolitan area (Delaware Valley) reaches 6 million inhabitants. (2014 census).

It is a great historical, cultural and artistic center in the United States, and in the same way an important industrial port on the Delaware River, which extends to the Atlantic Ocean. Founded in 1682, it was during the 18th century the most populous city of the Thirteen Colonies and the third most populous city in the British Empire (after London and Dublin), before provisionally becoming the capital city of the United States. It was quickly overtaken by New York and yielded its capital status to the brand new city of Washington D.C. Today, Philadelphia is the main metropolis of the state of Pennsylvania, although the capital and seat of government is Harrisburg.

The name of the city, chosen by William Penn, means "the city of brotherly love" (composed of philos (φίλος) "love", and adelphos (ἀδελφός) "brother"), as it was desired that it was a refuge of religious tolerance .

Established in 1682, it is one of the oldest cities in the country, and, as the original capital and the largest city of the colonial era, it enjoyed greater political and social importance than Boston or New York. In 1776, the Thirteen Colonies Continental Congress met in Philadelphia and on July 4 of that year declared independence from Great Britain. Perhaps the most famous citizen of Philadelphia was Benjamin Franklin, writer, scientist, and politician.

Philadelphia is central to African American history, its large black population predates the Great Migration.

Explanation:

How did poor factory workers live day to day?

Answers

-overcrowding

-poor sanitation

-spread of diseases

-pollution

As well, workers were paid low wages that barely allowed them to afford the cost of living associated with their rent and food.

how do we adapt to the current media?​

Answers

Answer:

The correct approach is "Media Relations".

Explanation:

Media relations emphasizes the interaction between a business or agency and journalists, whereas marketing communication applies the interaction to something like the wider population outside the press.  In consideration of everyone, all of the aspects in which public relations experts communicate with either the news media is where she starts to focus on the present state of American politics.

We can adapt to the current media by going to the path of truth without being corrupt.

Current Media

There is no simple answer to how we adapt to the current media.

Today media is corrupt as they get funds as part of propaganda to spread false news for the favour party interests.

One example is during the Presidency of Donald Trump.

The media played a great role in spreading false news against President Trump during his Presidency despite helping in securing borders and bringing jobs in America.

He also helped negotiate with North Korea and removed the US from the Iran nuclear deal.

Media can adapt by stopping working for those who fit their bills and interest.

Learn more about Media here:

brainly.com/question/24814095

who won the 1986 world series (baseball)

Answers

Answer:

The New York Mets

Which sentence belongs in an introduction of an argumentative essay

Answers

Answer:

In the late 1800s, the Industrial Revolution became one of the best things to ever happen to the United States, as it resulted in many new types of inventions and transportation.

Explanation:

An argumentative essay is a text in which its development is determined by an argument or reasoning; The exposition of these arguments is intended to persuade readers about the validity of a point of view. The essay has a central idea from which others derive to complement it. It is usually an academic writing that gives an author a voice about a topic, often controversial; it includes subjectivity and at the same time the presentation of facts and data that support the central position. This type of essay is not intended to treat the subject it deals with in detail, but to reflect on it, giving the reader justified opinions to invite him to reflect. In general, the essay seeks to convey a personal point of view about a subject.

the iroquois confederacy was based on an unwritten body of rules called the

Answers

Answer:

Great Law of Peace

Explanation:

1. What are the first 10 Amendments also known as?

Answers

Answer:

Bill of Rights

Explanation:

Answer:

Bill of Rights

Explanation

The Bill of Rights is the first 10 Amendments to the Constitution. It spells out Americans' rights in relation to their government. It guarantees civil rights and liberties to the individual—like freedom of speech, press, and religion.

Why was it hard to do trade between the East Coast and the West Coast of the U.S. ?

Answers

Answer:

It was hard to trade between the West coast and East coast because of the distance and they didn't always want to trade 100%

Explanation:

"Inaugural Address", John F. Kennedy describes how
human beings still fight for the same goals as their ancestors
did. Which goal does he present as MOST important?
o education
o conquest
o freedom
o change

Answers

Answer:

It would be freedom

Explanation:

In the previous wars for America, most wars were fought for freedom for their people.

What does God promise Abraham?

Answers

Answer:

God promised to make Abraham the father of a great people and said that Abraham and his descendants must obey God. In return God would guide them and protect them and give them the land of Israel.

Answer:

God promised that the promise to Abraham will be fulfilled in a certain way

Explanation:

God promised that the promise to Abraham will be fulfilled in a certain way. When Abraham tried to "help" God to fulfill His promise in another way, all kinds of problems evolved. The descendants of Ishmael, who was born of Hagar, was to be a source of conflict for Israel.

HOPE THIS HELPS :)PLEASE GIVE ME briliant if im right :)

What economic practices introduced by the Chinese facilitated trade and economic growth?

Answers

Answer:

The Chinese introduced several economic reforms shortly after the death of Mao-Zedong, thanks to the leadership of the Chinese new chairman: Deng-Xiapong.

Explanation:

First, they designed specific areas of the country as special economic zones. In these zones, companies, both foreign and local, had special tax and tariff incentives.

After, they opened up many economic sectors in the rest of the country, and this led to a very high increase in economic growth.

Finally, China entered the world trade organization, linking its economic with the rest of the world, and attracting even more investment and trade.

What were the Framers of the Constitution fearful of when it came to electing a president?
that there might be a tie


tyranny of the majority


political parties would form

Answers

Answer:

tyranny of the majority

Explanation:

7. Fill in the chart listed below on the results of the Reformation. You will use information from both Module 9:3 & 9:4 in your textbook. Some of the results will fit into multiple SPRITE categories:

Results of the Reformation / The Legacy of the Reformation:

S – Social

P – Political

R – Religious

I – Intellectual

T – Technological

E – Economic

Answers

Need the textbook page

What safeguards are in place to ensure that the wealthy
and the poor are equally impacted by this legislation?
Check all that apply.
People cannot furnish a substitute.
People cannot pay for their release,
People cannot receive a bounty to enlist
People cannot make money while enlisted,
People cannot serve more than one term of service,

Answers

Answer:

a,b,c

Explanation:

got it right  trust me

Answer:

Its A.B.C

Explanation:

They got it right.

What is known as the "incumbency effect?"

a)the advantages a candidate who is running for re-election has over the

candidate trying to unseat him or her

b) the responsibilities a candidate running for office has to his or her own party

Cthe advantages a candidate who is a "fresh face" has over someone with

strong name-recognition

d)The amount of money a candidate raises from business and union sources, as

opposed to money donated by individuals

Answers

Answer:

a) the advantages a candidate who is running for re-election has over the candidate trying to unseat him or her

Explanation:

Incumbency effect can be defined as the advantages a candidate who is running for re-election has over the candidate trying to unseat him or her in a democratic election process.

Basically, it refers to the tendency (phenomenon) for public officials such as senators or house of representative members who are already holding power (office) to get re-elected over an opposition. This ultimately implies that, a candidate contesting with an incumbent candidate is automatically placed at a disadvantage to emerge as the winner election due to the power of incumbency (incumbency effect).

Additionally, the incumbency effect is peculiar to democratic elections and most favorable or stronger for the house of representative members.

Fought in Sharpsburg, MD on September 17, 1862
Over 22,717 dead, wounded, or missing
Bloodiest day in American history
• Decisive Union victory
Ended Robert E. Lee's invasion of Maryland
Which would make the BEST title for this list of notes about the Civil War?

A)
The Battle of Shiloh

B)
The Battle of Antietam

C)
The Battle of Nashville

D)
The Battle of Chickamauga

Answers

Answer: B)

The Battle of Antietam

Explanation: usatest prep approved

All of the following individuals were empresarios except:
a.
Martín de León
b.
Stephen Austin
c.
Green Dewitt
d.
Baron de Bastrop


Please select the best answer from the choices provided

A
B
C
D

Answers

Answer: THE ANSWER IS D

Explanation: its not a because  Martín De León (1765–1833) was a rancher and wealthy Mexican empresario in Texas who was descended from Spanish aristocrac

its not b because Stephen Fuller Austin (November 3, 1793 – December 27, 1836) was an American empresario. Known as the "Father of Texas", and the founder of Texas, he led the second, and ultimately, the successful colonization of the region by bringing 300 families from the United States to the region in 1825.

its not c because Green DeWitt was an empresario in Mexican Texas. He founded the DeWitt Colony. In 1822, DeWitt petitioned the Mexican government for permission to settle ...

so d is the olny right answer and i got it right on the test

Baron de Bastrop was the impresarios according to the question. Therefore option D is correct.

Who Was Baron de Bastrop?

The Dutch landowner and businessman Felipe Enrique Neri was well-known for his wealth during the Anglo-American colonization of Texas.

Neri was charged in 1793 with misusing tax money for private benefit. The province offered him a reward of 1,000 ducats. Before the end of the year, Philip and his family arrived in Philadelphia through Hamburg under the alias Bastrop.

They were residing in Frederick County, Maryland, around 1800, and before 1804 his wife and girls left for the Netherlands. Neri identified himself in Spanish Louisiana as Baron de Bastrop, a nobleman from the Netherlands who had fled his homeland as a result of the French invasion.

To learn more about Baron de Bastrop follow the link.

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What is the best term to describe the government established by the
Fundamental Orders of Connecticut?
A
autocracy
B
democracy
C
oligarchy
D
monarchy

Answers

i could be wrong but i’m thinking b) democracy.
I think the answer is b

What caused Islam to spread throughout Arabia?

A. Wealthy Meccan leaders lent support to new faith
B. People in Arabia joined Islam while a Muhammad was on the Hijra
C. People in Arabia were inspired to join Islam after reading the Qur’an
D. Followers of Islam promoted their message while traveling to other cities

Answers

Answer:

B. People in Arabia joined Islam while a Muhammad was on the Hijra

Explanation:

The prophet Muhammad when he was on the Hegira in the 622, began building his large followers of Islam in Medina and people of Arabia followed him.

Arab Muslims were victories over other nations and brought the Islamic religion to them and also built some structures in the land.

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