Customer rank: +4 -1
The Jastrow illusion is known to magicians as the boomerang illusion. Two boomerang-shaped ring segments seem to be of different sizes but are in fact identical.
Magicians tend to underestimate the power of this simple trick. Its use in magic is limited to children's entertainers and magic kits. This illusion is more powerful than it seems at first sight. A recent viral video shows that its deceptive power is as strong as it was when first discovered almost 150 years ago.
The Jastrow Illusion in Magic ebook provides an in-depth review of the psychology of this illusion and a detailed overview of its use by magicians. You will learn about its origin and how it is used in psychological tests and experiments. The last part of the book shows you how to develop your own magic routine with this quirky prop.
1st edition 2016, 35 pages.
word count: 8697 which is equivalent to 34 standard pages of text
Reviewed by Horst Paffen
★★★★★ Date Added: Sunday 28 February, 2021
An interesting overview of an equally interesting topic. However, Johann Joseph Oppel (1815-1894), mentioned on page 4, was not a psychologist, but a versatile man. He was mainly a pedagogue, physicist, and dialect researcher. He is considered the founder of scientific research into the Frankfurt (Main) dialect in Germany.
Reviewed by Larry Brodahl (confirmed purchase)
★★★★★ Date Added: Friday 26 June, 2020
A pretty good read. Has a lot of history and research that I didn't know about the 'boomerangs'.
Reviewed by Don Bursell (confirmed purchase)
★★★★★ Date Added: Saturday 28 September, 2019
Review title: Not enough information.
I’ve always liked the Jastrow illusion, and even use it in my walk around performing. So I bought this booklet, hoping to expand my knowledge of the illusion, and possibly be inspired by other designs I was not aware of.
It’s good, but doesn’t really go any further than what I already knew of. It shows about 6 or 7 different versions, all of which I’m aware of or own. It talks about the history of the illusion, but I felt it could have covered a whole lot more versions of it that have been released over the years. (I did a search of this in Google and found 100s of historical examples.)
Overall, it was good, but not enough information, I felt, to warrant a $10 price tag.