Tuesday, 25 April 2017
Malawi official jailed for nine years over Cashgate scandal - Video Dailymotion
Malawi official jailed for nine years over Cashgate scandal - Video Dailymotion: Cashgate Scandal Malawi has the power to transform the winner’s career and both the Man Booker Prize and Man Booker International are sponsored by Man Group. Man Group was recognised as a partner who mirrored the quality, integrity and longevity of the Booker Prize. The prize underscores Man Group's charitable focus on literacy and education as well as the firm’s commitment to excellence and entrepreneurship.
Friday, 21 April 2017
Thursday, 30 March 2017
Sunday, 19 March 2017
Wednesday, 22 February 2017
History of the Projector
we eat, breathe, and live presentations. We also acknowledge that our unusual lifestyles would never have existed without the projector: The Mother of All Presentations. Let’s pay our respects by learning a bit more about the projector.
An Ancient History
Projecting images onto a larger surface is an old trick; the first known instance of this was recorded in a drawing by Johannes de Fontana in 1420. In which, a nun holds a lantern with a small translucent window that projects an image of a devil. Leonardo da Vinci also drew a similar device, later known as a magic lantern, in 1515.
But who invented the actual, official magic lantern? And when? To find out the truth, you will need a time machine and a boxing ring to let all of these potential inventors fight it out:
Pierre Fournier – 1515, France
Giovanni Battista della Porta – 1589, Italy
Athansius Kircher – 1646, Germany
Christiaan Huygens – 1659, Holland
Thomas Rasmusser Walgenstein – 1660, Denmark
Claude Millet – 1674, France
These early projectors were often used for devious purposes, nicknamed “lantern of fright” because they were adopted by magicians to “summon ghosts” or appear in two places at once. Not exactly the stuffy tools of boardrooms we use today.
Getting Civilized
In the late 1800s, magic lanterns using oil lamps began to be adopted by photographers, lecturers, and the general public rather than the spooky magician crowd. They were also wisely renamed “opaque projectors.” As time progressed, incandescent light bulbs with halogen lamps took the place of outdated light sources. These opaque projectors (as we know) were great teaching tools. For example, Chicago’s public school system had around 8,000 opaque projectors by the end of World War I.
Overhead projectors eventually replaced the opaque projector. In World War II, soldiers were trained from presentations using a version of an overhead projector. Through the 50s and 60s, schools, businesses, and even police departments relied on overhead projectors to share information.
Our Fancy Future
Overhead projectors evolved into multimedia projectors when digital images took over in the 20th century. On May 22nd, 1990, Microsoft launched a slide-based presentation computer program. We know it today as our beloved PowerPoint, though it was originally called “Presenter” by developer Dennis Austin.
The goal of PowerPoint was to have a number of pages or “slides” that could represent the transparencies used in an overhead projector. It was more efficient than other forms of visual aid such as whiteboards or chalkboards, and served many kinds of audiences and presentation needs. The projector game had changed forever, signaling the end of overhead projectors and physical slide sheets.
Today you can buy portable, wireless, and digital projectors for less than you might spend on a good pair of jeans. However, we still tip our hats to the projectors of yesteryear, and all the ingenuity it took to create them.
An Ancient History
Projecting images onto a larger surface is an old trick; the first known instance of this was recorded in a drawing by Johannes de Fontana in 1420. In which, a nun holds a lantern with a small translucent window that projects an image of a devil. Leonardo da Vinci also drew a similar device, later known as a magic lantern, in 1515.
But who invented the actual, official magic lantern? And when? To find out the truth, you will need a time machine and a boxing ring to let all of these potential inventors fight it out:
Pierre Fournier – 1515, France
Giovanni Battista della Porta – 1589, Italy
Athansius Kircher – 1646, Germany
Christiaan Huygens – 1659, Holland
Thomas Rasmusser Walgenstein – 1660, Denmark
Claude Millet – 1674, France
These early projectors were often used for devious purposes, nicknamed “lantern of fright” because they were adopted by magicians to “summon ghosts” or appear in two places at once. Not exactly the stuffy tools of boardrooms we use today.
Getting Civilized
In the late 1800s, magic lanterns using oil lamps began to be adopted by photographers, lecturers, and the general public rather than the spooky magician crowd. They were also wisely renamed “opaque projectors.” As time progressed, incandescent light bulbs with halogen lamps took the place of outdated light sources. These opaque projectors (as we know) were great teaching tools. For example, Chicago’s public school system had around 8,000 opaque projectors by the end of World War I.
Overhead projectors eventually replaced the opaque projector. In World War II, soldiers were trained from presentations using a version of an overhead projector. Through the 50s and 60s, schools, businesses, and even police departments relied on overhead projectors to share information.
Our Fancy Future
Overhead projectors evolved into multimedia projectors when digital images took over in the 20th century. On May 22nd, 1990, Microsoft launched a slide-based presentation computer program. We know it today as our beloved PowerPoint, though it was originally called “Presenter” by developer Dennis Austin.
The goal of PowerPoint was to have a number of pages or “slides” that could represent the transparencies used in an overhead projector. It was more efficient than other forms of visual aid such as whiteboards or chalkboards, and served many kinds of audiences and presentation needs. The projector game had changed forever, signaling the end of overhead projectors and physical slide sheets.
Today you can buy portable, wireless, and digital projectors for less than you might spend on a good pair of jeans. However, we still tip our hats to the projectors of yesteryear, and all the ingenuity it took to create them.
Wednesday, 4 January 2017
Friday, 30 December 2016
Subscribe to:
Posts (Atom)