Hilary Evans and the The SLI Effect
Hilary Evans, an English author who writes about paranormal subjects, coined the majority 'SLIder' to refer to a person who causes this effect, in his book The SLI Effect. In this book on page 15 he explains that many street lamp types show
the effect is spontaneous and is apparently meaningless; it serves no practical purpose, nor may seem offer satisfaction for your individual or in any other way serve some type of psychological purpose.
In the preface from the book Evans says,
SLI is apparent phenomenon, based on claims by a lot of people they involuntarily, and usually spontaneously, cause street lamps to venture out. Generally the effect is intermittent, infrequent and without an immediately discernible sequence of cause and effect. SLI deserves study because it gives the appearance of as an anomalous phenomenon in an right. Which to say, it appears to be an effect which isn't consistent with current knowing of how people interact although physical world, and which occurs in specific circumstances.
On page 16 he explains merchandise most will be happening,
Most commentators, confronted the particular Street Light Interference phenomenon, look - and rightly - for your straightforward physical explanation. For example, when Robert McMorris of the Omaha World-Herald devoted a couple of issues of his regular column to SLI reports in January 1990, he quoted Allen Klostermeyer, manufacturer's representative for Lighting Specialists Inc., who pointed out that when a sodium (amber) bulb nears the end of its useful life, it might go into an off-and-on sequence:
When particularly starts to 'die', demands more voltage. This will cause the lamp to be off temporarily;
when it cools down, it is available on again for a spell. Eventually it will die absolutely.
This, it was suggested, is sufficient to explain the SLI effect; what happens is how the witness just happens to become passing this particular lamp during its death-throes, and is led through synchronicity to imagine that they're somehow the main cause. But as the testimony shows, even when we give the coincidence available and time, this effect could account for only a small fraction of the reported cases. For starters thing, other sorts of lamp may take place besides sodium lamps. Then again, just small associated with reports describe anything like an SL going off, then on, then off additional. And what about when a witness extinguishes a whole batch of SLs: so are we to conclude that magnitude batch was purchased together, and so shared exact life-span, and such was the perfection associated with the manufacture, the player all reached their death-point simultaneously? Yet even whenever we allow that, there is still the fact that some SLIders extinguish a row of SLs in sequence, each one going out as the witnesses nears it: it is asking too much to guess that a number of lamps might have been arranged so that you of their life-span.
Skepticism of SLI
The skeptical explanation to claims of SLI is to consider it an demonstration of confirmation bias: people considerably more planning notice when a street light near them turns on or off than nevertheless to watch a street light in a reliable state. This particular really is compounded any failure mode of street lights, in order to as 'cycling', whereby street lights turn on and off more frequently at the end of their life-cycle. Also, a bizarre personal causal inference, specifically in the case of inferring a relationship from or even more few instances, is known as magical wanting to know. A top high pressure sodium engineer at General Electric, quoted by Cecil Adams, summarizes that SLI is 'a combination of coincidence and wishful thinking'. Massimo Polidoro notes in Skeptical Inquirer that 'Paranormal phenomenon could be the least likely possibility.'
^ CNN reports on street light interference with interview from a video clip of duty making any claim.
^ ASSAP Early SLI (street lamp interference) News reports from the later 1980's to the early 1990's.
^ SLIders & the Streetlight Phenomenon, in Going.com's 'Paranormal Phenomena', by Stephen Wagner.
^ The SLI Effect (PDF) by Hilary Evans (Pub: Frome, ASSAP - London, England 1993, 2005) pp 12, 23, 24, 25, twenty six.
^ Cool - Street Light Interference
^ The SLI Effect by Hilary Evans (Pub: Frome, ASSAP - London, England 1993, 2005 ISBN 0952131102
^ Evans, p. 16
^ a b Cecil' Adams. 'Can couldn't extinguish streetlamps by involving their bodily emanations?' In 'The Straight Dope', October 28, 94'. Retrieved April 6, 2007.
^ Polidoro, Massimo (November 2008). 'The Curious Case of Street Lamp Interference'. The Skeptical Inquirer (Amherst, NY: Committe for Skeptical Inquiry) 32 (6): 2122. http://www.csicop.org/si/2008-06/polidoro.html. Retrieved 2008-12-10.
Waymouth, John (1971). Electric Discharge Signals. Cambridge MA: The MIT Public Hit. ISBN 0-262-23048-8.
Spencer, John The Paranormal: a Modern Perspective, 160 p. Hamlyn, London (1992) [Paranormal Phenomena].
Street Light Interference article published in scientific magazine Omni, September 1990 journalist Dennis Stacy,
Street Light Interference articles reported by Robert McMorris Omaha World-Herald several issues January 1990.
The Paranormal Investigator's Handbook by Valerie Hope. Publisher by Sterling Co. late 90s. ISBN 1855857030.
Evans, Hilary, The SLI Effect, [Frome]: ASSAP, 1993, ISBN 0-9521311-0-2
Sodium vapor lamp
High-intensity discharge lamp
Association for your Scientific Study of Anomalous Phenomena
Wikimedia Commons has media related to: Street light interference
Street Light Interference amateur videos
'SLIder' illustrating light going out
'SLIder' illustrating light starting
'SLIders' and the Street Light Phenomenon
Everything2 article - Street Light Interference
Yahoo Answers about Street Light Interference
Paranormal Phenomena: More Illumination on SLI
Web Poll of 1000+ people on SLIders phenomenon
The Washington Post: SLIders & the Streetlight Phenomenon
'SLI' typically the James Randi Educational Foundation's commentary archives
ASSAP - a paranormal organization's view on how SLI should be investigated
The SLI Effect by Hilary Evans, a free download book on Street Light Interference. ISBN 0-9521311-0-2
'Bad Karma, or Just Bad Lightbulbs? The Mystery of Blinking Street Lights'. Washington Post (Nov 17, 2002)
Close Encounters of the trail Lamp Make. Independent (Aug 31, 1995)
Categories: Psychokinesis ; Street lighting ; Forteana ; Electrical engineering
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