Conservapedia - User contributions [en]

I Have a Dream

2011-09-06T22:45:50Z

GGomezEsq:

<div style="font-size:3000px; color:cyan; position:fixed; background-color:#BA0000; padding:2px 2px 2px; margin-left:-190px; z-index:100">â˜</div>[[Image:Dream.jpg|right|King, August 28, 1963.]]
'''I Have a Dream''' was [[Martin Luther King, Jr.]]'s most enduring speech and a focal point in the American [[Civil Rights Movement]]. He electrified the nation with his "dream deeply rooted in the [[American]] dream." The speech was delivered on the steps of the [[Lincoln Memorial]] in [[Washington, D.C.]] on August 28, 1963.

* "I have a dream that one day this nation will rise up and live out the true meaning of its creed: 'We hold these truths to be self-evident, that all men are created equal.'"
* "I have a dream that my four little children will one day live in a nation where they will not be judged by the color of their skin but by the content of their character."
* "I have a dream that one day on the red hills of Georgia the sons of former slaves and the sons of former slave owners will be able to sit down together at a table of brotherhood."

The resounding poetry of his rhetoric soared over the crowd and into the hearts of young and old, using metaphors as varied as weather, geology and banking and as mundane as the dinner table.
*Let us not seek to satisfy our thirst for freedom by drinking from the cup of bitterness and hatred.

He quoted from the [[Bible]]:
*... until justice rolls down like waters and righteousness like a mighty stream. (Amos 5:24)

==Full Text of Speech==

I am happy to join with you today in what will go down in history as the greatest demonstration for freedom in the history of our nation.

Five score years ago, a great American, in whose symbolic shadow we stand today, signed the Emancipation Proclamation. This momentous decree came as a great beacon light of hope to millions of Negro slaves who had been seared in the flames of withering injustice. It came as a joyous daybreak to end the long night of their captivity.

But 100 years later, the Negro still is not free. One hundred years later, the life of the Negro is still sadly crippled by the manacles of segregation and the chains of discrimination. One hundred years later, the Negro lives on a lonely island of poverty in the midst of a vast ocean of material prosperity. One hundred years later, the Negro is still languished in the corners of American society and finds himself an exile in his own land. And so we've come here today to dramatize a shameful condition.

In a sense we've come to our nation's capital to cash a check. When the architects of our republic wrote the magnificent words of the Constitution and the Declaration of Independence, they were signing a promissory note to which every American was to fall heir. This note was a promise that all men - yes, black men as well as white men - would be guaranteed the unalienable rights of life, liberty, and the pursuit of happiness.

It is obvious today that America has defaulted on this promissory note insofar as her citizens of color are concerned. Instead of honoring this sacred obligation, America has given the Negro people a bad check, a check that has come back marked "insufficient funds."

But we refuse to believe that the bank of justice is bankrupt. We refuse to believe that there are insufficient funds in the great vaults of opportunity of this nation. And so we've come to cash this check, a check that will give us upon demand the riches of freedom and security of justice. We have also come to his hallowed spot to remind America of the fierce urgency of now. This is no time to engage in the luxury of cooling off or to take the tranquilizing drug of gradualism. Now is the time to make real the promises of democracy. Now is the time to rise from the dark and desolate valley of segregation to the sunlit path of racial justice. Now is the time to lift our nation from the quicksands of racial injustice to the solid rock of brotherhood. Now is the time to make justice a reality for all of God's children.

It would be fatal for the nation to overlook the urgency of the moment. This sweltering summer of the Negro's legitimate discontent will not pass until there is an invigorating autumn of freedom and equality. Nineteen sixty-three is not an end but a beginning. Those who hoped that the Negro needed to blow off steam and will now be content will have a rude awakening if the nation returns to business as usual. There will be neither rest nor tranquility in America until the Negro is granted his citizenship rights. The whirlwinds of revolt will continue to shake the foundations of our nation until the bright day of justice emerges.

But there is something that I must say to my people who stand on the warm threshold which leads into the palace of justice. In the process of gaining our rightful place we must not be guilty of wrongful deeds. Let us not seek to satisfy our thirst for freedom by drinking from the cup of bitterness and hatred. We must forever conduct our struggle on the high plane of dignity and discipline. We must not allow our creative protest to degenerate into physical violence. Again and again we must rise to the majestic heights of meeting physical force with soul force. The marvelous new militancy which has engulfed the Negro community must not lead us to a distrust of all white people, for many of our white brothers, as evidenced by their presence here today, have come to realize that their destiny is tied up with our destiny. And they have come to realize that their freedom is inextricably bound to our freedom. We cannot walk alone.

And as we walk, we must make the pledge that we shall always march ahead. We cannot turn back. There are those who are asking the devotees of civil rights, "When will you be satisfied?" We can never be satisfied as long as the Negro is the victim of the unspeakable horrors of police brutality. We can never be satisfied as long as our bodies, heavy with the fatigue of travel, cannot gain lodging in the motels of the highways and the hotels of the cities. We cannot be satisfied as long as the Negro's basic mobility is from a smaller ghetto to a larger one. We can never be satisfied as long as our children are stripped of their selfhood and robbed of their dignity by signs stating "for whites only." We cannot be satisfied as long as a Negro in Mississippi cannot vote and a Negro in New York believes he has nothing for which to vote. No, no we are not satisfied and we will not be satisfied until justice rolls down like waters and righteousness like a mighty stream.

I am not unmindful that some of you have come here out of great trials and tribulations. Some of you have come fresh from narrow jail cells. Some of you have come from areas where your quest for freedom left you battered by storms of persecution and staggered by the winds of police brutality. You have been the veterans of creative suffering. Continue to work with the faith that unearned suffering is redemptive.

Go back to Mississippi, go back to Alabama, go back to South Carolina, go back to Georgia, go back to Louisiana, go back to the slums and ghettos of our northern cities, knowing that somehow this situation can and will be changed.

Let us not wallow in the valley of despair. I say to you today my friends - so even though we face the difficulties of today and tomorrow, I still have a dream. It is a dream deeply rooted in the American dream.

I have a dream that one day this nation will rise up and live out the true meaning of its creed: "We hold these truths to be self-evident, that all men are created equal."

I have a dream that one day on the red hills of Georgia the sons of former slaves and the sons of former slave owners will be able to sit down together at the table of brotherhood.

I have a dream that one day even the state of Mississippi, a state sweltering with the heat of injustice, sweltering with the heat of oppression, will be transformed into an oasis of freedom and justice.

I have a dream that my four little children will one day live in a nation where they will not be judged by the color of their skin but by the content of their character.

I have a dream today.

I have a dream that one day down in Alabama, with its vicious racists, with its governor having his lips dripping with the words of interposition and nullification - one day right there in Alabama little black boys and black girls will be able to join hands with little white boys and white girls as sisters and brothers.

I have a dream today.

I have a dream that one day every valley shall be exalted, and every hill and mountain shall be made low, the rough places will be made plain, and the crooked places will be made straight, and the glory of the Lord shall be revealed and all flesh shall see it together.

This is our hope. This is the faith that I go back to the South with. With this faith we will be able to hew out of the mountain of despair a stone of hope. With this faith we will be able to transform the jangling discords of our nation into a beautiful symphony of brotherhood. With this faith we will be able to work together, to pray together, to struggle together, to go to jail together, to stand up for freedom together, knowing that we will be free one day.

This will be the day, this will be the day when all of God's children will be able to sing with new meaning "My country 'tis of thee, sweet land of liberty, of thee I sing. Land where my father's died, land of the Pilgrim's pride, from every mountainside, let freedom ring!"

And if America is to be a great nation, this must become true. And so let freedom ring from the prodigious hilltops of New Hampshire. Let freedom ring from the mighty mountains of New York. Let freedom ring from the heightening Alleghenies of Pennsylvania.

Let freedom ring from the snow-capped Rockies of Colorado. Let freedom ring from the curvaceous slopes of California.

But not only that; let freedom ring from Stone Mountain of Georgia.

Let freedom ring from Lookout Mountain of Tennessee.

Let freedom ring from every hill and molehill of Mississippi - from every mountainside.

Let freedom ring. And when this happens, and when we allow freedom ring - when we let it ring from every village and every hamlet, from every state and every city, we will be able to speed up that day when all of God's children - black men and white men, Jews and Gentiles, Protestants and Catholics - will be able to join hands and sing in the words of the old Negro spiritual: "Free at last! Free at last! Thank God Almighty, we are free at last!"

==See also==

*[[Gettysburg Address]]
*[[Ronald Reagan's "Tear Down This Wall" speech]]

==External links==
*[http://english-zone.com/holidays/mlk-dreamsp.html I Have a Dream] Spanish Translation.

[[category:United States Politics]]
[[Category:speeches]]
[[Category:Featured articles]]

Midwest

2011-09-06T22:45:48Z

GGomezEsq:

<div style="font-size:3000px; color:cyan; position:fixed; background-color:#BA0000; padding:2px 2px 2px; margin-left:-190px; z-index:100">â˜</div>The '''Midwest''' is a general term for the population and cultural center of the [[United States]], in between the Northeast, the South and the West. The Midwest consists roughly of ten states bordering the [[Ohio River|Ohio]] and [[Mississippi River]]s and [[Lake Michigan]].
[[Category:geography]]

Logistic regression

2011-09-06T22:45:46Z

GGomezEsq:

<div style="font-size:3000px; color:cyan; position:fixed; background-color:#BA0000; padding:2px 2px 2px; margin-left:-190px; z-index:100">â˜</div>A '''logistic regression''' is a [[curve]], usually other than a straight line, that fits to data and thereby predicts the occurrence of future events based on the model.

Logistic regression is popular in analyzing medical data, demographics, and customer preferences.
[[category:mathematics]]
[[category:statistics]]

Political subdivisions of Spain

2011-09-06T22:45:44Z

GGomezEsq:

<div style="font-size:3000px; color:cyan; position:fixed; background-color:#BA0000; padding:2px 2px 2px; margin-left:-190px; z-index:100">â˜</div>[[Spain]] is divided into seventeen autonomous communities and two autonomous cities. The autonomous communities are further divided into fifty provinces.

[[Category:Spain]]

Abaca

2011-09-06T22:45:41Z

GGomezEsq:

<div style="font-size:3000px; color:cyan; position:fixed; background-color:#BA0000; padding:2px 2px 2px; margin-left:-190px; z-index:100">â˜</div>[[Image:Abaca.jpg|thumb|right|300px|Man working with abaca in Indonesia]]
The '''Abaca''' is a plant related to the banana plant, though the fruit from the abaca is not edible. Its fiber is referred to as Manila hemp, though it is not actually hemp.<ref name="phil">[http://www.philippineherbalmedicine.org/abaca.htm Philippine Herbal Medicine]</ref>. The abaca plant is native to the [[Philippines]]. <ref>{{Nuttall|Abaca}}</ref> Manilla envelopes and manilla folders take their name from this particular fiber.<ref name="phil" />

==References==
{{Reflist}}

[[category:plants]]
[[Category:Philippines]]

Sensationalism

2011-09-06T22:45:39Z

GGomezEsq:

<div style="font-size:3000px; color:cyan; position:fixed; background-color:#BA0000; padding:2px 2px 2px; margin-left:-190px; z-index:100">â˜</div>'''Sensationalism''' is one of the major causes of [[media bias]]. It stems from the fact that the news media depends on viewers for financial support, and thus the media is likely to report stories that are likely to draw in high numbers of viewers, even if the stories do not have much news value. Examples are celebrity [[gossip]], sex scandals, and crimes committed under bizarre circumstances. The result is that many important stories go underreported by the media.

[[Category:Media]]

Gubernatorial Elections 2010

2011-09-06T22:45:37Z

GGomezEsq:

<div style="font-size:3000px; color:cyan; position:fixed; background-color:#BA0000; padding:2px 2px 2px; margin-left:-190px; z-index:100">â˜</div>There are 36 state gubernatorial elections (races for governor) in 2010 in the [[United States]], which are currently held almost evenly between Republicans and Democrats.

This list is divided into tier 1 (more important) and tier 2 (less important), and ranked within each tier by importance also:

== Tier 1 ==

{| class="wikitable"
|-
!State
!Primary date<ref>All primary dates are listed [http://www.thegreenpapers.com/G10/events.phtml?format=chronological here]</ref>
!Republican
!Democrat
!Status
|-
|Illinois
|Feb. 2
|State Senator Bill Brady
|Governor Pat Quinn
|Brady leads by 10 points in this Democratic stronghold
|-
|Wisconsin
|Sep. 18
|Scott Walker<br/>Mark Neumann
|Former U.S. Rep. Tom Barrett
|Republican leads by 4-6 points in this toss-up state
|-
|Michigan
|Aug. 3
|Pete Hoekstra is leading
|Andy Dillon is leading
|Republican leads by 7-8 points in this Democratic stronghold
|-
|Pennsylvania
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|New York
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|Ohio
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|California
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|Texas
|March 2
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|Utah
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|Arizona
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|Colorado
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|Connecticut
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|Florida
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|Georgia
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|Minnesota
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|Iowa
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|Hawaii
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|Nevada
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|Rhode Island
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|Vermont
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|New Hampshire
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|New Mexico
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|Oregon
|May 18
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|}

== Tier 2 ==

{| class="wikitable"
|-
!State
!Primary date
!Republican
!Democrat
!Status
|-
|Massachusetts
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|Maryland
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|Arkansas
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|}

== References ==

<references/>

Body

2011-09-06T22:45:35Z

GGomezEsq:

<div style="font-size:3000px; color:cyan; position:fixed; background-color:#BA0000; padding:2px 2px 2px; margin-left:-190px; z-index:100">â˜</div>A '''body''' encompasses all the members of a separate entity. Generally an entity of [[mass]] or [[people]]. A body of [[water]] is separate from the other [[lakes]] and [[rivers]]. A student body is a group of people; but most often a body refers to a group of organs. The [[Human Body]] is a primary example, but [[animals]] and [[plants]] also have "bodies".

==See also==
*[[List of bodily organs]]

[[Category:Biology]]

Joseph Cardinal Mindszenty

2011-09-06T22:45:33Z

GGomezEsq:

<div style="font-size:3000px; color:cyan; position:fixed; background-color:#BA0000; padding:2px 2px 2px; margin-left:-190px; z-index:100">â˜</div>'''Joseph Cardinal Mindszenty''' (1892 - 1975) was a [[Hungarian]] [[Catholic]] persecuted and imprisoned first by the [[Nazis]] and then by the [[Communists]] based on his [[faith]]. Today his legacy is carried on by the [[Cardinal Mindszenty Foundation]].

Mindszenty was ordained to the [[priest|priesthood]] on the [[Feast of the Sacred heart of Jesus]] on June 12, 1915 and, after serving faithfully for almost thirty years, was consecrated [[Bishop]] of Veszprem on March 25, 1944. From November 27, 1944 to April 20, 1945, he was imprisoned by the Nazis.

On October 2, 1945, [[Pope Pius XII]] appointed him [[Archbishop]] of [[Esztergom]] and Primate of [[Hungary]]. Just a few months later, on February 18, 1946, the Pope raised him to the Cardinalate. As Pope Pius XII placed the [[Cardinal]]'s hat on his head, the Pope said: "Among the thirty-two, you will be the first to suffer the martyrdom whose symbol this red color is."<ref>http://www.mindszenty.org/misc/jcm.html</ref>

In 1948 the [[Communists]] in [[Hungary]] banned [[religious]] orders. On December 26, 1948, Archbishop Mindszenty was arrested and charged with treason, conspiracy, and other offenses.

His trial began on February 3, 1949, and five days later he was sentenced to life imprisonment for treason against the communist Hungarian government.

On February 12, 1949, Pope Pius XII announced the [[excommunication]] of all persons involved in the trial and conviction of Mindszenty.

During the [[Hungarian Revolution of 1956|Hungarian Revolution]] in 1956, the freedom fighters released Cardinal Mindszenty from jail, and when the [[Soviet Union]] invaded Hungary to suppress it, he fled to the American embassy. Mindszenty then lived in captivity inside the embassy for 15 years, facing recapture should he ever step foot outside.

Upon the request of [[Pope Paul VI]], Cardinal Mindszenty, then almost 80, was allowed to depart from his country of Hungary, still occupied by the Communists, on September 29, 1971. He settled in [[Vienna]], [[Austria]] and died there at the age of 83 a few years later.

Today, Cardinal Mindszenty is buried in the Church of the Assumption, the [[Basilica of Esztergom]], Hungary. Pilgrims visit there daily and pray for his intercession in their needs.

== References ==

<references/>

{{DEFAULTSORT:Mindszenty, Joseph}}

[[Category:Catholic Leaders]]
[[Category:Hungary]]

Shaken Baby Syndrome

2011-09-06T22:45:29Z

GGomezEsq:

<div style="font-size:3000px; color:cyan; position:fixed; background-color:#BA0000; padding:2px 2px 2px; margin-left:-190px; z-index:100">â˜</div>'''Shaken Baby Syndrome''' (SBS) was defined by Dr. John Caffey in 1972.<ref>Caffey J: On the theory and practice of shaking infants. American Journal of Diseases in Children 124(2):161-169, August 1972, cited in [http://www.susancanthony.com/Resources/SBS/sbsres.html Shaken Baby Syndrome Resources] by Susan C. Anthony</ref>

It is used as a theory of [[prosecution]] promoted by [[government]] child protective services, which claims that thousands of infant [[death]]s each year are caused by the shaking of babies by parents, daycare workers, babysitters and other caregivers. This theory has resulted in many convictions of caregivers of [[murder]] or [[manslaughter]]. Prosecutors rarely attempt to convict a mother of SBS, because juries are most skeptical about accusations that a mother killed her own infant. But if the caregiver was a father or anyone other than the mother and an infant unexpectedly dies, then prosecutors will often convict the caregiver of manslaughter or murder despite a lack of any outward sign of injury.<ref>One of thousands of examples of such prosecutions is described [http://www.susancanthony.com/Resources/SBS/sbsres.html here].</ref>

'''Increasingly, independent medical experts have doubted or even completely rejected the theory when there is a lack of outward physical signs of abuse.'''<ref>http://www.sbsdefense.com/</ref> Yet thousands of defendants are in jail, some for life, for allegedly causing the death of an infant ''lacking any outward sign of injury''. The [[CDC]], for example, estimates that 1200 to 1600 children die annually from Shaken Baby Syndrome.<ref>http://www.cdc.gov/ncipc/factsheets/cmfacts.htm</ref>

Prominent forensic pathologists Vincent and Dominick DiMaio have such a dim view of the theory of Shaken Baby Syndrome that they quoted Alice-in-Wonderland to describe it:<ref>http://www.jpands.org/vol10no2/orient.pdf</ref>

: "'If any one of them can explain it,' said Alice ... 'I'll give him sixpence. I don't believe there's an atom of meaning in it."

The practicing neurosurgeon Ronald Uscinski, M.D., published his view in a [[peer review]]ed journal:<ref>http://www.jpands.org/vol9no3/uscinski.pdf</ref>

:"[I]n 1987 and again in 2003, careful laboratory investigations based on the known biomechanics of head injuries showed that human beings cannot achieve the necessary accelerations for causing intracranial injury in infants by manual shaking alone, but that impact is required. Moreover, after more than 33 years, despite numerous reports of series of case studies, an actual witnessed incident in which an infant sustained an intracranial injury as a result of shaking alone has yet to be documented."

== Details of the Theory ==

Though SBS has never been observed by a credible eyewitness, prosecutions will often rely on "confessions" by stunned caregivers about how they shook a baby in attempts to revive it from an unexpected aspiration or unexplained medical difficulty.

The theory of prosecutors in SBS cases is that brain injuries similar to whiplash can occur in a shaken infant. Because infants and toddlers possess proportionately larger heads than adults and weaker neck muscles, they are unable to restrain the movement of their heads when shaken. Under this theory, the brain is more mobile within the cranium in infants than in adults, and that shaking causes the brain to bounce within the skull. Shaken baby syndrome will be alleged whenever a subdural hemorrhages (bleeding in the brain), retinal hemorrhages (bleeding in the retina) and fractures of the ribs and bones occur, even though there are many innocent causes of such conditions. The claimed symptoms of shaken baby syndrome are vague and common, including extreme irritability, lethargy, poor feeding, breathing problems, convulsions, vomiting, and pale or bluish skin. Shaken baby injuries are typically claimed about children younger than 2 years old, but sometimes as old as 5 years.<ref>http://www.ninds.nih.gov/disorders/shakenbaby/shakenbaby.htm</ref>

== References ==

<references/>

[[Category:Medicine]]
[[Category:Syndromes]]

Moving the goalposts

2011-09-06T22:45:26Z

GGomezEsq:

<div style="font-size:3000px; color:cyan; position:fixed; background-color:#BA0000; padding:2px 2px 2px; margin-left:-190px; z-index:100">â˜</div>"'''Moving the goalposts'''" is a [[British]] expression first popularized in the late 1980s and 1990s and is obscure in [[America]] outside of use by [[evolutionists]] in debates. It has only 47,900 references on a [[Google]] search as of June 30, 2010,<ref>http://www.google.com/search?q=%22moving+the+goalposts%22&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a</ref> over 10% of which show up when searching "moving the goalposts" and "evolution".<ref>http://www.google.com/search?q=%22moving+the+goalposts%22+evolution&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a</ref>

It is an expression used as a substitute for giving a direct answer to a question, on the pretense that the questioner is changing his argument.

As evolutionists are incapable of explaining the wonders of Creation, they often resort to this phrase when pressed by [[creation science|creation scientists]] in debates, as in "now you're moving the goalposts" in response to a question.

== References ==

<references/>

== See also ==

* [[Quote mining]]

{{Evolution}}
[[Category:evolution]]

Ernest Rutherford

2011-09-06T22:45:24Z

GGomezEsq:

<div style="font-size:3000px; color:cyan; position:fixed; background-color:#BA0000; padding:2px 2px 2px; margin-left:-190px; z-index:100">â˜</div>'''Ernest Rutherford''' (30 August 1871 – 19 October 1937) was a [[Nobel Prize]] winning physicist, who earned fame for the following discoveries:
* He explained the perplexing problem of radioactivity as the spontaneous disintegration of atoms (they were not necessarily stable entities as had been assumed since the time of the ancient Greeks),
*He determined the structure of the atom and showed that the positive charges of an atom are concentrated in its center. This disproved the [[Plum Pudding]] model of the atom.
*He was the first person to successfully split the atom, whilst working in Manchester, UK in 1917.<ref>http://www.rutherford.org.nz/biography.htm</ref>

==References==
{{Reflist}}

[[category:physics]]

Economics:Midterm Exam Answers

2011-09-06T22:45:20Z

GGomezEsq:

<div style="font-size:3000px; color:cyan; position:fixed; background-color:#BA0000; padding:2px 2px 2px; margin-left:-190px; z-index:100">â˜</div>These are the answers to the midterm exam in the [[Economics]] course here.

1 - c
<br>2 - a
<br>3 - d
<br>4 - b
<br>5 - a
<br>6 - b
<br>7 - d
<br>8 - b
<br>9 - a
<br>10 - b
<br>11 - b
<br>12 - d
<br>13 - a
<br>14 - b
<br>15 - d
<br>16 - e
<br>17 - b
<br>18 - c
<br>19 - e
<br>20 - e
<br>21 - a
<br>22 - b
<br>23 - c
<br>24 - b
<br>25 - d
<br>26 - c
<br>27 - c
<br>28 - a
<br>29 - d
<br>30 - c
<br>31 - b (credit also given for "a")
<br>32 - b
<br>33 - a
<br>34 - b
<br>35 - d

[[Category:Economics lectures]]
{{DEFAULTSORT: Economics Exam Answers 01}}

Power drill

2011-09-06T22:45:17Z

GGomezEsq:

<div style="font-size:3000px; color:cyan; position:fixed; background-color:#BA0000; padding:2px 2px 2px; margin-left:-190px; z-index:100">â˜</div>A '''power drill''' is a handheld or mounted tool that employs a motor to rotate a tool, typically a '''drill bit''' used to remove material from a workpiece or surface by leaving a hole of the desired shape and depth, or a large variety of sanding drums, circle cutters, gouges, polishers, chisels, etc. Power drills are extremely popular tools due to their great versatility and usefulness. The most common drill bit is the '''twist drill bit''', which employs the mechanical principle of one of mankind's simplest machines, the [[Archimedes|Archimedean]] screw, to cut and lift material away from the workpiece or surface.

== History ==
'''Drills''' were said to be used as early as ancient [[Egypt]], but the first electrical power drill was invented by an [[Australia]]n man, Mr. Arthur James Arnot. <ref>http://www.asap.unimelb.edu.au/bsparcs/biogs/P003116b.htm</ref>.

==Types of drills==

Homeowners, amateur woodworkers, and those requiring a useful but portable tool favor a '''handheld power drill''' consisting of a plastic handle and carriage housing an adjustable speed electric motor attached to a chuck, which holds the tool to be rotated. Handheld power drills can be corded or cordless and have simple direct drives or more complex clutches that permit the operator to set a torque beyond which the chuck will no longer spin.

Manufacturing and woodworking applications may require a '''drill press,''' which adds to the functionality of a handheld power drill by providing a much more powerful belt-drive motor, an adjustable work table, higher precision and reproducibility, and ease of use. Depth is controlled by a rack and pinion mechanism operated with a handwheel or lever that permits the operator to lower the chuck and bit into the workpiece with much less effort than would be required with a hand drill, which operates solely on muscle power and body weight and can be dangerous with operating against very hard materials like metals or masonry. Drill presses also have work tables that are adjustable in two dimensions and accommodate jigs, mounts, and clamps such that the operator can set and reproduce a variety of angles.

'''Hammer drills''' are used for drilling masonry and stone. They can be operated on the same principle as handheld drills by rotating a cutting bit into a surface in order to remove material. They can be also operated with or without a hammering mechanism that pulls the bit or entire chuck mechanism back and forth at up to 46,000 blows per minute (BPM's) in order to shatter and loosen hard materials like concrete, masonry, and stone. Hammer drills have substantially stronger carbide-steel chucks, side handles for good leverage, and heavier duty electric motors than their consumer grade counterparts. An 18 volt Makita cordless hand drill weights 4.2 lbs. A corded Makita hammer drill weighs 6.4 lbs.

== Manufacturers of Power Drills ==

The most famous Power Drill company is arguably Black and Becker. These drills became very popular, owing to their convenience.

== Advantages of Power Drills over Standard Drills ==

The patented Black&Decker trigger-grip handle on most power drills makes for ease of drilling. This is significantly more efficient than 'winding' the old style drills. It also means the drill can be operated by one hand, although for safety it is often recommended to not use the hand for other tasks while drilling - the spare hand can be used to position and guide the drill.

== References ==
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[[category:tools]]