An overhead projector projects enlarged images of transparencies onto a screen. It consists of a lamp, lens, and mirror that reflects the image on the transparency up towards the screen. The presenter can see the transparency and the audience sees the enlarged projected image. Overhead projectors were commonly used in classrooms but have declined in use due to the rise of digital projection technologies like PowerPoint that allow for more interactive presentations.
An overhead projector (OHP), like a film or slide projector, uses light to project an enlarged image on a screen, allowing the view of a small document or picture to be shared with a large audience.
In the overhead projector, the source of the image is a page-sized sheet of transparent plastic film (also known as "foils" or "transparencies") with the image to be projected either printed or hand-written/drawn. These are placed on the glass platen of the projector, which has a light source below it and a projecting mirror and lens assembly above it (hence, "overhead"). They were widely used in education and business before the advent of video projectors.
An overhead projector (OHP), like a film or slide projector, uses light to project an enlarged image on a screen, allowing the view of a small document or picture to be shared with a large audience.
In the overhead projector, the source of the image is a page-sized sheet of transparent plastic film (also known as "foils" or "transparencies") with the image to be projected either printed or hand-written/drawn. These are placed on the glass platen of the projector, which has a light source below it and a projecting mirror and lens assembly above it (hence, "overhead"). They were widely used in education and business before the advent of video projectors.
audio visual aids or medias are the instructional aids which v can use for making our teaching more effective correct and interesting that are helpful to make teaching effective.
Non projected av aids - Charts, Poster, flash cardsJaice Mary Joy
Non-Projected AV Aids are aids that do not need the use of equipment for projection. These are the most widely used media in many isolated and rural areas around the world.
audio visual aids or medias are the instructional aids which v can use for making our teaching more effective correct and interesting that are helpful to make teaching effective.
Non projected av aids - Charts, Poster, flash cardsJaice Mary Joy
Non-Projected AV Aids are aids that do not need the use of equipment for projection. These are the most widely used media in many isolated and rural areas around the world.
Lesson 14 - Maximizing the use of the Overhead Projector and the Chalkboarddes Allaba
At the end of the presentation, the readers will be able to:
-identify the techniques in using chalkboard
-identify the advantages of the overhead projector
-manipulate the overhead projector
-make an overlaying transparencies
Lesson 14 - Maximizing the use of the Overhead Projector and the ChalkboardVince Charles Relator
the students will be able to do the following:
identify the techniques in using the chalkboard
identify the advantages of the overhead projector
make an overlaying transparencies
manipulate an overhead projector
As a film director, I have always been awestruck by the magic of animation. Animation, a medium once considered solely for the amusement of children, has undergone a significant transformation over the years. Its evolution from a rudimentary form of entertainment to a sophisticated form of storytelling has stirred my creativity and expanded my vision, offering limitless possibilities in the realm of cinematic storytelling.
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Experience the thrill of Progressive Puzzle Adventures, like Scavenger Hunt Games and Escape Room Activities combined Solve Treasure Hunt Puzzles online.
From the Editor's Desk: 115th Father's day Celebration - When we see Father's day in Hindu context, Nanda Baba is the most vivid figure which comes to the mind. Nanda Baba who was the foster father of Lord Krishna is known to provide love, care and affection to Lord Krishna and Balarama along with his wife Yashoda; Letter’s to the Editor: Mother's Day - Mother is a precious life for their children. Mother is life breath for her children. Mother's lap is the world happiness whose debt can never be paid.
Meet Dinah Mattingly – Larry Bird’s Partner in Life and Loveget joys
Get an intimate look at Dinah Mattingly’s life alongside NBA icon Larry Bird. From their humble beginnings to their life today, discover the love and partnership that have defined their relationship.
Panchayat Season 3 - Official Trailer.pdfSuleman Rana
The dearest series "Panchayat" is set to make a victorious return with its third season, and the fervor is discernible. The authority trailer, delivered on May 28, guarantees one more enamoring venture through the country heartland of India.
Jitendra Kumar keeps on sparkling as Abhishek Tripathi, the city-reared engineer who ends up functioning as the secretary of the Panchayat office in the curious town of Phulera. His nuanced depiction of a young fellow exploring the difficulties of country life while endeavoring to adjust to his new environmental factors has earned far and wide recognition.
Neena Gupta and Raghubir Yadav return as Manju Devi and Brij Bhushan Dubey, separately. Their dynamic science and immaculate acting rejuvenate the hardships of town administration. Gupta's depiction of the town Pradhan with an ever-evolving outlook, matched with Yadav's carefully prepared exhibition, adds profundity and credibility to the story.
New Difficulties and Experiences
The trailer indicates new difficulties anticipating the characters, as Abhishek keeps on wrestling with his part in the town and his yearnings for a superior future. The series has reliably offset humor with social editorial, and Season 3 looks ready to dig much more profound into the intricacies of rustic organization and self-awareness.
Watchers can hope to see a greater amount of the enchanting and particular residents who have become fan top picks. Their connections and the one of a kind cut of-life situations give a reviving and interesting portrayal of provincial India, featuring the two its appeal and its difficulties.
A Mix of Humor and Heart
One of the signs of "Panchayat" is its capacity to mix humor with sincere narrating. The trailer features minutes that guarantee to convey giggles, as well as scenes that pull at the heartstrings. This equilibrium has been a critical calculate the show's prosperity, resounding with crowds across different socioeconomics.
Creation Greatness
The creation quality remaining parts first rate, with the beautiful setting of Phulera town filling in as a scenery that upgrades the narrating. The meticulousness in portraying provincial life, joined with sharp composition and solid exhibitions, guarantees that "Panchayat" keeps on hanging out in the packed web series scene.
Expectation and Delivery
As the delivery date draws near, expectation for "Panchayat" Season 3 is at a record-breaking high. The authority trailer has previously created critical buzz, with fans enthusiastically anticipating the continuation of Abhishek Tripathi's excursion and the new undertakings that lie ahead in Phulera.
All in all, the authority trailer for "Panchayat" Season 3 recommends that watchers are in for another drawing in and engaging ride. Yet again with its charming characters, convincing story, and ideal mix of humor and show, the new season is set to enamor crowds. Write in your schedules and prepare to get back to the endearing universe of "Panchayat."
In the vast landscape of cinema, stories have been told, retold, and reimagined in countless ways. At the heart of this narrative evolution lies the concept of a "remake". A successful remake allows us to revisit cherished tales through a fresh lens, often reflecting a different era's perspective or harnessing the power of advanced technology. Yet, the question remains, what makes a remake successful? Today, we will delve deeper into this subject, identifying the key ingredients that contribute to the success of a remake.
240529_Teleprotection Global Market Report 2024.pdfMadhura TBRC
The teleprotection market size has grown
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teleprotection market size is expected to see
exponential growth in the next few years. It will grow
to $70.77 billion in 2028 at a compound annual
growth rate (CAGR) of 26.0%.
Young Tom Selleck: A Journey Through His Early Years and Rise to Stardomgreendigital
Introduction
When one thinks of Hollywood legends, Tom Selleck is a name that comes to mind. Known for his charming smile, rugged good looks. and the iconic mustache that has become synonymous with his persona. Tom Selleck has had a prolific career spanning decades. But, the journey of young Tom Selleck, from his early years to becoming a household name. is a story filled with determination, talent, and a touch of luck. This article delves into young Tom Selleck's life, background, early struggles. and pivotal moments that led to his rise in Hollywood.
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Early Life and Background
Family Roots and Childhood
Thomas William Selleck was born in Detroit, Michigan, on January 29, 1945. He was the second of four children in a close-knit family. His father, Robert Dean Selleck, was a real estate investor and executive. while his mother, Martha Selleck, was a homemaker. The Selleck family relocated to Sherman Oaks, California. when Tom was a child, setting the stage for his future in the entertainment industry.
Education and Early Interests
Growing up, young Tom Selleck was an active and athletic child. He attended Grant High School in Van Nuys, California. where he excelled in sports, particularly basketball. His tall and athletic build made him a standout player, and he earned a basketball scholarship to the University of Southern California (U.S.C.). While at U.S.C., Selleck studied business administration. but his interests shifted toward acting.
Discovery of Acting Passion
Tom Selleck's journey into acting was serendipitous. During his time at U.S.C., a drama coach encouraged him to try acting. This nudge led him to join the Hills Playhouse, where he began honing his craft. Transitioning from an aspiring athlete to an actor took time. but young Tom Selleck became drawn to the performance world.
Early Career Struggles
Breaking Into the Industry
The path to stardom was a challenging one for young Tom Selleck. Like many aspiring actors, he faced many rejections and struggled to find steady work. A series of minor roles and guest appearances on television shows marked his early career. In 1965, he debuted on the syndicated show "The Dating Game." which gave him some exposure but did not lead to immediate success.
The Commercial Breakthrough
During the late 1960s and early 1970s, Selleck began appearing in television commercials. His rugged good looks and charismatic presence made him a popular brand choice. He starred in advertisements for Pepsi-Cola, Revlon, and Close-Up toothpaste. These commercials provided financial stability and helped him gain visibility in the industry.
Struggling Actor in Hollywood
Despite his success in commercials. breaking into large acting roles remained a challenge for young Tom Selleck. He auditioned and took on small parts in T.V. shows and movies. Some of his early television appearances included roles in popular series like Lancer, The F.B.I., and Bracken's World. But, it would take a
Tom Selleck Net Worth: A Comprehensive Analysisgreendigital
Over several decades, Tom Selleck, a name synonymous with charisma. From his iconic role as Thomas Magnum in the television series "Magnum, P.I." to his enduring presence in "Blue Bloods," Selleck has captivated audiences with his versatility and charm. As a result, "Tom Selleck net worth" has become a topic of great interest among fans. and financial enthusiasts alike. This article delves deep into Tom Selleck's wealth, exploring his career, assets, endorsements. and business ventures that contribute to his impressive economic standing.
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Early Life and Career Beginnings
The Foundation of Tom Selleck's Wealth
Born on January 29, 1945, in Detroit, Michigan, Tom Selleck grew up in Sherman Oaks, California. His journey towards building a large net worth began with humble origins. , Selleck pursued a business administration degree at the University of Southern California (USC) on a basketball scholarship. But, his interest shifted towards acting. leading him to study at the Hills Playhouse under Milton Katselas.
Minor roles in television and films marked Selleck's early career. He appeared in commercials and took on small parts in T.V. series such as "The Dating Game" and "Lancer." These initial steps, although modest. laid the groundwork for his future success and the growth of Tom Selleck net worth. Breakthrough with "Magnum, P.I."
The Role that Defined Tom Selleck's Career
Tom Selleck's breakthrough came with the role of Thomas Magnum in the CBS television series "Magnum, P.I." (1980-1988). This role made him a household name and boosted his net worth. The series' popularity resulted in Selleck earning large salaries. leading to financial stability and increased recognition in Hollywood.
"Magnum P.I." garnered high ratings and critical acclaim during its run. Selleck's portrayal of the charming and resourceful private investigator resonated with audiences. making him one of the most beloved television actors of the 1980s. The success of "Magnum P.I." played a pivotal role in shaping Tom Selleck net worth, establishing him as a major star.
Film Career and Diversification
Expanding Tom Selleck's Financial Portfolio
While "Magnum, P.I." was a cornerstone of Selleck's career, he did not limit himself to television. He ventured into films, further enhancing Tom Selleck net worth. His filmography includes notable movies such as "Three Men and a Baby" (1987). which became the highest-grossing film of the year, and its sequel, "Three Men and a Little Lady" (1990). These box office successes contributed to his wealth.
Selleck's versatility allowed him to transition between genres. from comedies like "Mr. Baseball" (1992) to westerns such as "Quigley Down Under" (1990). This diversification showcased his acting range. and provided many income streams, reinforcing Tom Selleck net worth.
Television Resurgence with "Blue Bloods"
Sustaining Wealth through Consistent Success
In 2010, Tom Selleck began starring as Frank Reagan i
Skeem Saam in June 2024 available on ForumIsaac More
Monday, June 3, 2024 - Episode 241: Sergeant Rathebe nabs a top scammer in Turfloop. Meikie is furious at her uncle's reaction to the truth about Ntswaki.
Tuesday, June 4, 2024 - Episode 242: Babeile uncovers the truth behind Rathebe’s latest actions. Leeto's announcement shocks his employees, and Ntswaki’s ordeal haunts her family.
Wednesday, June 5, 2024 - Episode 243: Rathebe blocks Babeile from investigating further. Melita warns Eunice to stay clear of Mr. Kgomo.
Thursday, June 6, 2024 - Episode 244: Tbose surrenders to the police while an intruder meddles in his affairs. Rathebe's secret mission faces a setback.
Friday, June 7, 2024 - Episode 245: Rathebe’s antics reach Kganyago. Tbose dodges a bullet, but a nightmare looms. Mr. Kgomo accuses Melita of witchcraft.
Monday, June 10, 2024 - Episode 246: Ntswaki struggles on her first day back at school. Babeile is stunned by Rathebe’s romance with Bullet Mabuza.
Tuesday, June 11, 2024 - Episode 247: An unexpected turn halts Rathebe’s investigation. The press discovers Mr. Kgomo’s affair with a young employee.
Wednesday, June 12, 2024 - Episode 248: Rathebe chases a criminal, resorting to gunfire. Turf High is rife with tension and transfer threats.
Thursday, June 13, 2024 - Episode 249: Rathebe traps Kganyago. John warns Toby to stop harassing Ntswaki.
Friday, June 14, 2024 - Episode 250: Babeile is cleared to investigate Rathebe. Melita gains Mr. Kgomo’s trust, and Jacobeth devises a financial solution.
Monday, June 17, 2024 - Episode 251: Rathebe feels the pressure as Babeile closes in. Mr. Kgomo and Eunice clash. Jacobeth risks her safety in pursuit of Kganyago.
Tuesday, June 18, 2024 - Episode 252: Bullet Mabuza retaliates against Jacobeth. Pitsi inadvertently reveals his parents’ plans. Nkosi is shocked by Khwezi’s decision on LJ’s future.
Wednesday, June 19, 2024 - Episode 253: Jacobeth is ensnared in deceit. Evelyn is stressed over Toby’s case, and Letetswe reveals shocking academic results.
Thursday, June 20, 2024 - Episode 254: Elizabeth learns Jacobeth is in Mpumalanga. Kganyago's past is exposed, and Lehasa discovers his son is in KZN.
Friday, June 21, 2024 - Episode 255: Elizabeth confirms Jacobeth’s dubious activities in Mpumalanga. Rathebe lies about her relationship with Bullet, and Jacobeth faces theft accusations.
Monday, June 24, 2024 - Episode 256: Rathebe spies on Kganyago. Lehasa plans to retrieve his son from KZN, fearing what awaits.
Tuesday, June 25, 2024 - Episode 257: MaNtuli fears for Kwaito’s safety in Mpumalanga. Mr. Kgomo and Melita reconcile.
Wednesday, June 26, 2024 - Episode 258: Kganyago makes a bold escape. Elizabeth receives a shocking message from Kwaito. Mrs. Khoza defends her husband against scam accusations.
Thursday, June 27, 2024 - Episode 259: Babeile's skillful arrest changes the game. Tbose and Kwaito face a hostage crisis.
Friday, June 28, 2024 - Episode 260: Two women face the reality of being scammed. Turf is rocked by breaking
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Scandal! Teasers June 2024 on etv Forum.co.zaIsaac More
Monday, 3 June 2024
Episode 47
A friend is compelled to expose a manipulative scheme to prevent another from making a grave mistake. In a frantic bid to save Jojo, Phakamile agrees to a meeting that unbeknownst to her, will seal her fate.
Tuesday, 4 June 2024
Episode 48
A mother, with her son's best interests at heart, finds him unready to heed her advice. Motshabi finds herself in an unmanageable situation, sinking fast like in quicksand.
Wednesday, 5 June 2024
Episode 49
A woman fabricates a diabolical lie to cover up an indiscretion. Overwhelmed by guilt, she makes a spontaneous confession that could be devastating to another heart.
Thursday, 6 June 2024
Episode 50
Linda unwittingly discloses damning information. Nhlamulo and Vuvu try to guide their friend towards the right decision.
Friday, 7 June 2024
Episode 51
Jojo's life continues to spiral out of control. Dintle weaves a web of lies to conceal that she is not as successful as everyone believes.
Monday, 10 June 2024
Episode 52
A heated confrontation between lovers leads to a devastating admission of guilt. Dintle's desperation takes a new turn, leaving her with dwindling options.
Tuesday, 11 June 2024
Episode 53
Unable to resort to violence, Taps issues a verbal threat, leaving Mdala unsettled. A sister must explain her life choices to regain her brother's trust.
Wednesday, 12 June 2024
Episode 54
Winnie makes a very troubling discovery. Taps follows through on his threat, leaving a woman reeling. Layla, oblivious to the truth, offers an incentive.
Thursday, 13 June 2024
Episode 55
A nosy relative arrives just in time to thwart a man's fatal decision. Dintle manipulates Khanyi to tug at Mo's heartstrings and get what she wants.
Friday, 14 June 2024
Episode 56
Tlhogi is shocked by Mdala's reaction following the revelation of their indiscretion. Jojo is in disbelief when the punishment for his crime is revealed.
Monday, 17 June 2024
Episode 57
A woman reprimands another to stay in her lane, leading to a damning revelation. A man decides to leave his broken life behind.
Tuesday, 18 June 2024
Episode 58
Nhlamulo learns that due to his actions, his worst fears have come true. Caiphus' extravagant promises to suppliers get him into trouble with Ndu.
Wednesday, 19 June 2024
Episode 59
A woman manages to kill two birds with one stone. Business doom looms over Chillax. A sobering incident makes a woman realize how far she's fallen.
Thursday, 20 June 2024
Episode 60
Taps' offer to help Nhlamulo comes with hidden motives. Caiphus' new ideas for Chillax have MaHilda excited. A blast from the past recognizes Dintle, not for her newfound fame.
Friday, 21 June 2024
Episode 61
Taps is hungry for revenge and finds a rope to hang Mdala with. Chillax's new job opportunity elicits mixed reactions from the public. Roommates' initial meeting starts off on the wrong foot.
Monday, 24 June 2024
Episode 62
Taps seizes new information and recruits someone on the inside. Mary's new job
Maximizing Your Streaming Experience with XCIPTV- Tips for 2024.pdfXtreame HDTV
In today’s digital age, streaming services have become an integral part of our entertainment lives. Among the myriad of options available, XCIPTV stands out as a premier choice for those seeking seamless, high-quality streaming. This comprehensive guide will delve into the features, benefits, and user experience of XCIPTV, illustrating why it is a top contender in the IPTV industry.
From Slave to Scourge: The Existential Choice of Django Unchained. The Philos...Rodney Thomas Jr
#SSAPhilosophy #DjangoUnchained #DjangoFreeman #ExistentialPhilosophy #Freedom #Identity #Justice #Courage #Rebellion #Transformation
Welcome to SSA Philosophy, your ultimate destination for diving deep into the profound philosophies of iconic characters from video games, movies, and TV shows. In this episode, we explore the powerful journey and existential philosophy of Django Freeman from Quentin Tarantino’s masterful film, "Django Unchained," in our video titled, "From Slave to Scourge: The Existential Choice of Django Unchained. The Philosophy of Django Freeman!"
From Slave to Scourge: The Existential Choice of Django Unchained – The Philosophy of Django Freeman!
Join me as we delve into the existential philosophy of Django Freeman, uncovering the profound lessons and timeless wisdom his character offers. Through his story, we find inspiration in the power of choice, the quest for justice, and the courage to defy oppression. Django Freeman’s philosophy is a testament to the human spirit’s unyielding drive for freedom and justice.
Don’t forget to like, comment, and subscribe to SSA Philosophy for more in-depth explorations of the philosophies behind your favorite characters. Hit the notification bell to stay updated on our latest videos. Let’s discover the principles that shape these icons and the profound lessons they offer.
Django Freeman’s story is one of the most compelling narratives of transformation and empowerment in cinema. A former slave turned relentless bounty hunter, Django’s journey is not just a physical liberation but an existential quest for identity, justice, and retribution. This video delves into the core philosophical elements that define Django’s character and the profound choices he makes throughout his journey.
Link to video: https://youtu.be/GszqrXk38qk
Create a Seamless Viewing Experience with Your Own Custom OTT Player.pdfGenny Knight
As the popularity of online streaming continues to rise, the significance of providing outstanding viewing experiences cannot be emphasized enough. Tailored OTT players present a robust solution for service providers aiming to enhance their offerings and engage audiences in a competitive market. Through embracing customization, companies can craft immersive, individualized experiences that effectively hold viewers' attention, entertain them, and encourage repeat usage.
2. DEFINITION
a projector having a flat, transparent top on which a
sheetlike transparency is placed, and an overhead
mirror that reflects the image on the transparency to a
screen
A projector capable of projecting enlarged images of
written or pictorial material onto a screen or wall from
a transparency placed horizontally below the projector
and lighted from underneath.
3. MECHANISM
An overhead projector typically consists of a large box
containing a very bright lamp and a fan to cool it. On top of
the box is a large fresnel lens that collimates the light. Above
the box, typically on a long arm, is a mirror and lens that
focusses and redirects the light forward instead of up.
Transparencies are placed on top of the lens for display. The
light from the lamp travels through the transparency and into
the mirror where it is shone forward onto a screen for display.
The mirror allows both the presenter and the audience to see
the image at the same time, the presenter looking down at the
transparency as if writing, the audience looking forward at
the screen. The height of the mirror can be adjusted, to both
focus the image and to make the image larger or smaller
depending on how close the projector is to the screen.
4. FOCAL-LENGTH ADJUSTMENT
Better-quality overhead projectors offer an adjustment
wheel or screw on the body of the projector, to move
the lamp towards or away from the fresnel lens. When
the mirror above the lens is moved too high or too low,
it moves out of the best focal distance for an evenly
white image, resulting in a projected image with either
blue or brown color fringing around the outside edge
of the screen. Turning the adjustment wheel moves the
lamp to correct the focal distance and restores the all-
white projected image.
5. ILLUMINATION
The lamp technology of an overhead projector is typically
very simple compared to a modern LCD or DLP video
projector. Most overheads use an extremely high-power
halogen lamp that may consume up to 750 watts yet
produces a fairly dim, yellowed image. A high-flow
blower is required to keep the bulb from melting itself
due to the heat output. Further, the intense heat usually
causes the halogen lamp to fail quickly, often lasting less
than 100 hours before failing and requiring replacement.
A modern LCD or DLP uses an arc lamp which has a
higher luminous efficacy and lasts for thousands of
hours. A negative to LCD/DLP technology is the warm
up time required for arc lamps.
6. HOW TO USE
Situate the overhead projector on a low table that is 2 to 3
feet off the floor. Make sure the overhead projector is
plugged into a reliable power source.
Place an overhead transparency on top of the flat glass
surface of the projector. Transparencies can be written on
directly with a wet erase overhead pen. Alternatively, a
transparency can be fed into a laser printer, and
information from programs such as spreadsheets and
databases can be directly printed on the transparency.
7. Turn on the overhead projector. Most machines have a large, circular
button on the front for this purpose, but on/off switch locations can
vary.
Angle the mirror at the top of the projection arm until the image is
properly aligned onto a blank wall or drop-down projection screen
Move the table holding the overhead projector forward or backward (if
necessary) until the projection image approximates the size of the
projection screen or blank wall space.
Turn the circular knob at the top of the projector arm until the
projected image comes into focus.
Press the on/off button again when finished with your presentation.
Allow the overhead projector to completely cool down before using it
again.
8. Older overhead projectors used a tubular quartz lamp body
containing the filament only, which mounted above a bowl-
shaped polished reflector. However because the lamp was
suspended above and outside the reflector, a large amount of
light was cast to the sides inside the projector body that was
wasted and required a very large lamp for sufficient screen
illumination. More recent projectors use an integrated lamp
and conical reflector assembly that allows the lamp to be
located deep within the reflector so that more light is
focused towards the fresnel lens, allowing for a lower-power
lamp.
The most recent innovation for overhead projectors with
integrated lamps/reflectors is the quick-swap dual-lamp
control, allowing two lamps to be installed in the projector in
movable sockets. If one lamp fails during a presentation, the
presenter can merely move a lever to slide the spare into
position and continue with the presentation, without
needing to open the projection unit or waiting for the failed
bulb to cool before replacing it.
9. Guidelines and Tips
Practice giving your presentation using your visual aids to check
out how well they project. This is a good time to also check for
spelling errors. Have a friend sit and watch your presentation
and make notes on any problems or needed improvements
with your visual aids. Practice using your overhead
transparencies so you will be comfortable with handling them
correctly.
Stand off to one side of the overhead projector while you face
the audience - Too many people stand between the overhead
projector and the screen causing a shadow of the presenter's
body. Standing to one side will allow the audience to see you
as the presenter and will prevent you from blocking their view
of your visual aid.
10. Do not face the "projected" image on the screen -
Face your audience and not the screen. Many
presenters face the screen and end up talking to the
screen.
Cover the transparency when you are done using it-
with an opaque piece of cardboard (I usually mount a
solid sheet of paper on one of my transparency
frames). You may also turn off the projector
completely, but beware, this can cause the projector
bulb to burn out sooner.
Bring a spare bulb!-Nothing is more unsettling than to
have your overhead projector bulb burn out during
your presentation. Bring spare bulbs and a glove to
change the bulb. The old bulb will be HOT! Make
sure you know how to change the bulb. CAUTION:
Remember HOT glass looks the same as cold glass!
11. Place the overhead to your RIGHT if you are right
handed and to your LEFT if you are left handed-
This will make it easier for you to face your audience
and write if you need to. In either case, you want to
stand in the center of the speaking area and face the
audience when you speak.
Place your overhead projector on a table low enough
so it does not block you or the screen. Have a small
table next to the overhead so you can stack your
overheads before and after you use them.
Place your screen on a diagonal instead of directly
behind you-this will assure that you do not block
the view for your audience. Also, have the top of the
screen tilted forward towards the overhead projector
(if possible) to prevent the "keystone" effect (This is
where the top of the image is larger than the
bottom).
12. Tape the power chord to the floor-to protect you or
someone else from tripping. As the presenter,
tripping over the chord and falling, although
humorous, is one large gesture you would prefer to
avoid.
Store your overhead transparencies in a sturdy box
or container so they will stay clean and protected
for the next time you need them. Label the box and
include a "clean" copy of your handouts in the box.
This will make it easier for you the next time you give
your award winning presentation again.
13. USES IN EDUCATION
The overhead projector facilitates an easy low-cost
interactive environment for educators. Teaching
materials can be pre-printed on plastic sheets, upon
which the educator can directly write using a non-
permanent, washable color marking pen. This saves
time, since the transparency can be pre-printed and
used repetitively, rather than having materials written
manually before each class.
14. The overhead is typically placed at a comfortable writing
height for the educator and allows the educator to face the
class, facilitating better communication between the
students and teacher. The enlarging features of the
projector allow the educator to write in a comfortable small
script in a natural writing position rather than writing in an
overly large script on a blackboard and having to constantly
hold his arm out in midair to write on the blackboard.
When the transparency sheet is full of written or drawn
material, it can simply be replaced with a new, fresh sheet
with more pre-printed material, again saving class time vs a
blackboard that would need to be erased and teaching
materials rewritten by the educator. Following the class
period, the transparencies are easily restored to their
original unused state by washing off with soap and water.
15. DECLINE IN USE
Overhead projectors were once a common fixture in most
classrooms and business conference rooms, but today are
slowly being replaced by document cameras, dedicated
computer projection systems and interactive whiteboards.
Such systems allow users to make animated, interactive
presentations with movement and video, typically using
software like Microsoft PowerPoint.
The primary reason for this gradual replacement is the deeply
ingrained use of computing technology in modern society
and the inability of overheads to easily support the features
that modern users demand. While an overhead can display
static images fairly well, it performs poorly at displaying
moving images. The LCD video display panels that were
once used have fallen out of favor due to the limited
resolution available and relatively dim, fuzzy image
produced by the overhead.
16. The standards of users have also increased, so that a
dim, fuzzy overhead projection that is too bright in the
center and too dim around the edges is no longer
acceptable. The optical focus, linearity, brightness and
clarity of an overhead generally cannot match that of a
video projector primarily due to the plastic fresnel
lens, which can only approximate what would
normally be an extremely large and heavy glass lens.
Video projectors utilize extremely small picture
generation mechanisms, allowing for precision optics
that far exceed the plastic fresnel lens' optical
performance. They also include additional optics that
eliminate the hotspot in the center of the screen
directly above the light source, so that the brightness is
uniform everywhere on the projection screen.
17. Critics feel that there are some downsides as these
technologies are more prone to failure and have a
much steeper learning curve for the user than a
standard overhead projector. While a computer
projection system eliminates the need to create hard
copy transparencies (which can be quite expensive,
particularly if made in color) of the slide show
presentation, many presenters make both in case the
computer hardware fails. Furthermore, the overhead
projector allows a more direct interaction through live
writing on the transparency.