Hilary Evans and the The SLI Effect
Hilary Evans, an English author who writes about paranormal subjects, coined the term '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 a large choice of street lamp types show
the effect is spontaneous and is apparently meaningless; it serves no practical purpose, nor does it seem to provide satisfaction for them or in additional way serve some kind of psychological purpose.
In the preface of the book Evans says,
SLI is an apparent phenomenon, in accordance with claims by several individuals that they involuntarily, and usually spontaneously, cause street lamps to go along with. Generally the effect is intermittent, infrequent and without an immediately discernible sequence of cause and effect. SLI deserves study because provides the appearance of being an anomalous phenomenon in its own right. That in order to say, it may seem to be an effect which is not consistent with our current knowledge of how people interact while using the physical world, and which occurs in specific circumstances.
On page 16 he explains weight reduction most likely end up being happening,
Most commentators, confronted with the Street Light Interference phenomenon, look - and rightly - for a super easy physical explanation. For example, when Robert McMorris of the Omaha World-Herald devoted two or three issues of his regular column to SLI reports in January 1990, he quoted Allen Klostermeyer, manufacturer's representative for Lighting Specialists Incorporated., 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 one associated with these starts to 'die', it requires more voltage. This triggers the lamp to go off temporarily;
when it cools down, it will come on again as news got around. Eventually it will die completely.
This, it was suggested, is sufficient to explain the SLI effect; occurs is that the witness just happens to be passing a lamp during its death-throes, and is led by the synchronicity to imagine that he is somehow responsible. But mainly because the testimony shows, even when we allow the coincidence in place and time, this effect could be aware of only a percent of the reported cases. For one thing, other kinds of lamp are involved besides sodium lighting and appliances. Then again, only a number of reports describe anything like an SL going off, then on, then off again. Exactly what about when a witness extinguishes home batch of SLs: are we in summary that the whole batch was purchased together, and so shared the same life-span, and such was the perfection of their manufacture, that they all reached their death-point simultaneously? Yet even when 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: this is asking too much to suppose your series of lamps would have been arranged in order of their life-span.
Skepticism of SLI
The skeptical explanation to claims of SLI end up being to consider it an example of confirmation bias: people hard more at risk of notice every single time a street light near them turns off or on than these types of to watch a street light in a gentle state. Individuals compounded by a failure mode of street lights, called 'cycling', in which street lights turn off and on more frequently at the end of their life cycle. Also, a bizarre personal causal inference, particularly in the case of inferring a relationship from much more few instances, is called magical visualizing. A top questionable 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 within a video clip of responsibility making such a claim.
^ ASSAP Early SLI (street lamp interference) News reports from the later 1980's to the earlier 1990's.
^ SLIders & the Streetlight Phenomenon, in For.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, 26.
^ 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 apparently extinguish streetlamps by regarding their bodily emanations?' In 'The Straight Dope', October 28, 1994. 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 Table lamps. Cambridge MA: The MIT Public Press. 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. 2007. 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 beginning
'SLIders' as well as 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' the actual planet James Randi Educational Foundation's commentary archives
ASSAP - a paranormal organization's take on how SLI should be investigated
The SLI Effect by Hilary Evans, a download free 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 road Lamp Multitude. Independent (Aug 31, 1995)
Categories: Psychokinesis ; Street lighting ; Forteana ; Electrical engineering
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