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General: MICHAEL PARE THE PHILADELPHIA EXPERIMENT ONE OF THE BEST SCIENCE FICTION FILMS
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The Philadelphia Experiment (film)

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From Wikipedia, the free encyclopedia
 
The Philadelphia Experiment
Theatrical release poster
Directed by Stewart Raffill
Screenplay by Wallace C. Bennett
Story by William Gray
Don Jakoby
Michael Janover
Based on The Philadelphia Experiment: Project Invisibility
1979 book
by Charles Berlitz
William L. Moore
Produced by Douglas Curtis
Joel B. Michaels
Starring
Cinematography Dick Bush
Edited by Neil Travis
Music by Kenneth Wannberg
Production
company
Cinema Group
Distributed by New World Pictures
Release date
  • August 3, 1984
Running time
102 minutes
Country United States
Language English
Budget $9 million[1]
Box office $8,103,330

The Philadelphia Experiment is a 1984 American science fiction film. It is directed by Stewart Raffill, stars Michael ParéBobby Di CiccoKene Holliday and Nancy Allen and is based on the urban legend of the Philadelphia Experiment. In 1943, United States Navy sailors David Herdeg (Paré) and Jim Parker (Di Cicco) are thrown forward in time to the year 1984 when a scientific experiment being performed aboard the USS Eldridge suffers a catastrophe. The film follows the two men as they attempt to survive the future and race against time to put an end to the experiment that now threatens the fate of the entire world.

Plot

[edit]

In 1943, United States Navy sailors David Herdeg and Jim Parker serve aboard destroyer escort USS Eldridge, docked in Philadelphia. Doctor James Longstreet and his team conduct an experiment to render the ship invisible to radar, but a malfunction causes the ship to disappear. David and Jim's attempts to stop the experiment fail and they jump overboard to escape.

They land during the night in a small town, which also disappears, leaving them marooned in a desert. Startled by the appearance of an unfamiliar aircraft (a helicopter), they flee and Jim is nearly electrocuted by an electric fence. Eventually, they find their way to a roadside diner. An energy discharge from Jim destroys two arcade games, forcing an altercation with the owner. Fleeing to the parking lot, they take a woman named Allison hostage and force her to drive them away. Confused by their surroundings, they are shocked when Allison tells them that the year is 1984. They are tracked and apprehended by the police. Jim, who is suffering increasingly severe seizures, is hospitalized before disappearing from his hospital bed in a flash of light. David and Allison then evade military police, who have arrived to take David into custody.

Learning that they are near Jim's birthplace, Santa Paula California, David decides to try to find his family. Jim's wife Pamela, who is now a senior citizen, immediately recognizes David from 1943. She says that the Eldridge had reappeared minutes after disappearing. Jim had also returned and had been chastised and hospitalized after telling the truth about temporarily visiting 1984. David finds that he himself never returned. David sees an elderly Jim outside a window but Jim refuses to speak with him. As David and Allison leave, they see military police approaching and a high speed chase through Jim's ranch ensues. The two manage to elude them when the pursuing vehicle crashes and burns. From the burning wreck, David salvages documents mentioning Longstreet. Recognizing that Longstreet had been involved with the Philadelphia experiment in 1943, David decides to find him. As they spend time together, David and Allison fall in love.

In 1984, Longstreet has attempted to use the same technologies that were used in the Eldridge experiment to create a shield as protection from an ICBM attack. When the equipment was tested, the shielded town disappeared into "hyperspace". The scientists are unable to shut down the experiment, which has created a vortex that is drawing matter into it and causes extremely unstable and severe weather. Longstreet predicts that the vortex will continue to expand until the entire world is consumed. The scientists send a probe into the vortex and discover the Eldridge inside. They theorize that the two experiments have linked together with the generators on the Eldridge powering the vortex.

David captures an assistant at Longstreet's home and forces the man to take them onto the base. Longstreet explains the situation to David and tells him that, according to surviving sailors from the Eldridge, the ship returned to Philadelphia in 1943 after David shut down the generator. Longstreet says that David must go through the vortex to the Eldridge and terminate the experiment or the vortex will destroy the Earth.

David is outfitted with a protective suit to allow him to shut down the experiment and catapulted into the vortex. He lands on the deck of the Eldridge, where he finds crew members badly injured. He hurries to the generator room and smashes arrays of vacuum tubes using a firefighting axe. The generator shuts down and David looks for Jim. Assured that Jim is fine, David jumps over the side of the ship and disappears. Back in 1943, Longstreet and others watch the Eldridge reappear in Philadelphia, revealing crew members with severe burns, while others have been fused alive into the ship's hull.

In 1984, the missing town reappears as Allison and David are reunited.

Cast

[edit]

Production

[edit]

Development and writing

[edit]

John Carpenter wrote an original draft. He called it a "great shaggy dog story. Absolute crap, but what a great story. While I was writing it, I couldn’t figure out the third act. A friend suggested the revenge of the crew against the people who put them there, but I thought it was too much like The Fog".[2]

Stewart Raffill says by the time he became involved with the film, the script had been rewritten nine times. He agreed to do the film, subject to the next rewrite which he thought was "terrible". The head of the studio agreed with Raffill's additions to the script, even though it was only three weeks before filming: "So, he asked if I had ever dictated a screenplay before. I told him I had not. Then he said, ‘Well, I’m gonna send someone to your house, a girl, every afternoon, and just dictate the story you told me and fill in the dialogue and we’ll make that.’ And I said, ‘Okay.’ So that's what I did."[3]

Principal photography began on November 28, 1983.[4] Parts of the film were shot in Salt Lake City and Wendover, UtahDenver, ColoradoSanta Paula, California, and Charleston, South Carolina.[5] The destroyer USS Laffey (DD-724), then on display at Patriots Point, represented USS Eldridge in the film. Other shooting locations included the John P. Grace Memorial Bridge, which was also known as the Cooper River Bridge in 1983, Charleston Harbor, the William Enston HomeWendover Air Force Base, and the Bonneville Salt Flats.[4]

Reception

[edit]

Critical response

[edit]

On Rotten Tomatoes the film has an approval rating of 50% based on reviews from 10 critics.[6]

Accolades

[edit]

Sequel and remake

[edit]

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Wavelength to Frequency Calculation and Equation


Wavelength to Frequency EquationA simple equation relates wavelength and frequency to the speed of the wave.

The wavelength to frequency and frequency to wavelength calculations are important in physics and engineering. Here is the equation relating wavelength and frequency, example calculations, and a table of common values.

Relationship Between Wavelength and Frequency

A simple equation relates wavelength to frequency:

v = λf

  • v = wave velocity (how fast the wave propagates in a medium)
  • λ = wavelength (distance over which a wave shape repeats)
  • f = wave frequency (number of waves per unit of time)

For light and other electromagnetic radiation in a vacuum, the wave velocity is the speed of light (c):

c = λf

But, the wave speed is different for other kinds of waves and for light passing through a medium.

  • Light in air or vacuum: 299,792,458 meters per second
  • Light in water: 224,901,000 m/s
  • Sound in air: 343.2 m/s
  • Sound in water (20 °C): 1,481 m/s

Wavelength and frequency are inversely proportional. As wavelength increases, frequency decreases. As frequency increases, wavelength decreases.

How to Calculate Wavelength From Frequency

Rearrange the equation and calculate wavelength from frequency:

λ = v/f

For example, find the wavelength of the musical note A4, which has a frequency of 440 Hz.

The only tricky part in the calculation is keeping the units straight. Usually, you work with meters and Hertz and then convert to other units (e.g., nanometers, THz, GHz). In this problem, the wave velocity is the speed of sound in air (343.2 m/s). The frequency is 440 Hz. One hertz unit equal one cycle (wave) per second, so a frequency of 440 Hz is 440 s-1.

λ = v/f
λ = (343.2 m/s)/(440 s-1)
λ = 0.78 m or 78 cm

As another example, find the frequency of the green light of the aurora borealis, which has a frequency of 5.38 x 1014 Hz.

Here, the equation is:

λ = c/f
λ = (3 x 108 m/sec)/(5.38 x 1014 s-1)
λ = 5.576 x 10-7 m = 557.6 nm

How to Calculate Frequency From Wavelength

Rearrange the equation and calculate frequency from wavelength:

f = v/λ

For example, find the wavelength of orange light with a frequency of 4.8×1014 Hz.

f = v/λ (but v is c for light)
f = c/λ
f = (3.00 × 108 m/s)/(4.8×1014 s-1)
f = 6.2 x 10-7 m = 620 nm

Wavelength to Frequency Chart

This chart shows the wavelength to frequency relationship for electromagnetic radiation:

Electromagnetic Radiation Wavelength Frequency
Gamma radiation 1 pm 300 EHz
X-ray 1 nm 300 PHz
Ultraviolet 100 nm 3 PHz
Visible light 400-700 nm 430-750 THz
Infrared 100 μm 3 THz
EHF (Extremely high frequency) 1 mm 300 GHz
SHF (Super high frequency) 1 cm 30 GHz
UHF (Ultra high frequency) 1 dm 3 GHz
VHF (Very high frequency) 10 m 30 MHz
ELF (Extremely low frequency) 100,000 km 3 Hz

References

  • Avison, John (1999). The World of Physics. Nelson Thornes. ISBN 978-0-17-438733-6.
  • Cassidy, David C.; Holton, Gerald James; Rutherford, Floyd James (2002). Understanding Physics. Birkhäuser. ISBN 0-387-98756-8.
  • Hecht, Eugene (1987). Optics (2nd ed.). Addison Wesley. ISBN 0-201-11609-X.
https://sciencenotes.org/wavelength-to-frequency-calculation-and-equation/


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