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PhilipBradfield

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Symmetry: A Very Short Introduction (Very Short Introductions)
Symmetry: A Very Short Introduction (Very Short Introductions)
by Ian Stewart
Edition: Paperback
Price: £4.99

4.0 out of 5 stars a short feast!, 22 May 2016
Verified Purchase(What is this?)
possibly too intense for an introduction


Navir Looky Periscope
Navir Looky Periscope
Price: £5.90

2 of 2 people found the following review helpful
4.0 out of 5 stars WORTH IT - EVEN AT THE HIGHER PRICE, 19 Dec. 2015
This review is from: Navir Looky Periscope (Toy)
nb
PRICE AT CHECKOUT IS HIGHER THAN PRICE ON WEBPAGE ...POOR customer relations

A USEFUL PHILOSOPHICAL TOY: TRY ROTATING THE TWO MIRRORS WITH RESPECT TO EACH OTHER


Does God Play Dice?: The New Mathematics of Chaos (Penguin Mathematics)
Does God Play Dice?: The New Mathematics of Chaos (Penguin Mathematics)
by Ian Stewart
Edition: Paperback
Price: £13.48

5.0 out of 5 stars Five Stars, 16 Dec. 2015
Verified Purchase(What is this?)
my second copy!


R B Bate of the Poultry 1782-1847: The life and times of a scientific instrument maker
R B Bate of the Poultry 1782-1847: The life and times of a scientific instrument maker
by Anita McConnell
Edition: Paperback

4.0 out of 5 stars Kaleidoscopic clarity, 12 April 2015
Verified Purchase(What is this?)
a gem of a book: my own interest is that Bate worked with David Brewster on his "polyangular" (ie variable angle) kaleidoscope:

- these are elegant "Philosophical toys" and demonstrate valuable optical principles. His products were finely engineered: even today, the images are clear and precise, and the fiducial marks for the "canonical" angles are precise.

I wish the modern group of kaleidoscope makers would aim to reproduce these exquisite devices!


Tobar Mirascope
Tobar Mirascope
Offered by The Magic Toy Shop
Price: £6.80

4.0 out of 5 stars the Miraculous MIRASCOPE, 4 Mar. 2015
This review is from: Tobar Mirascope (Toy)
The MIRASCOPE IS indeed educational: the optics is/are elegant: the object (at pole of the lower mirror) is at the focal point of the facing concave mirror, and the aperture (at the pole of the upper mirror) is at the focal point of the lower (equal) mirror.
so separation of the two poles is focal length of each mirror ie R/2

There is NO hologram: nothing is recorded/reconstructed, and there is no need for coherent (laser) light! Some adverts put in "hologram" - just a gimmick!

The observational value is high: just note how the image is real (can be cast onto paper) and has the correct chirality (ie no change of handedness) but is rotated 180 deg about the common axis of the mirrors
cf simple optical bench set-up with a convex lens, with real object/real image

There are internet sites explaining the optics, with good ray diagrams ( as of old!)
Comment Comment (1) | Permalink | Most recent comment: May 13, 2015 4:05 AM BST


Smiffy's Kaleidoscope with Light Effects
Smiffy's Kaleidoscope with Light Effects

3.0 out of 5 stars faulty switch-otherwise excellent, 1 Feb. 2014
Verified Purchase(What is this?)
well-worth buying for potential scientists/mathematicians/artists - and as therapy!

might well take users deeper into the "Alice" world of kaleidoscopes

see also The Brewster Kaleidoscope Society (USA)

lots of "craft" interest


My Sister Rosalind Franklin
My Sister Rosalind Franklin
by Jenifer Glynn
Edition: Hardcover
Price: £11.18

3.0 out of 5 stars thin reading, 1 Feb. 2014
Verified Purchase(What is this?)
not much of the science RF actually did:
mostly "life-style" observations/memories
I met the author at ECM28 (Crystallography) Warwick, 2014


From Atoms to Patterns: Crystal Structure Designs from the 1951 Festival of Britain
From Atoms to Patterns: Crystal Structure Designs from the 1951 Festival of Britain
by Lesley Jackson
Edition: Paperback
Price: £20.00

2 of 2 people found the following review helpful
5.0 out of 5 stars Creative Crystallography, 7 Oct. 2013
This book (published 2008 to accompany a Wellcome Collection exhibition) records the enterprising work of the late Dr Helen Megaw and others to promote, via the 1951 Festival of Britain, a wider public interest in, and appreciation and understanding of, the wonderful spatial patterns revealed as part of the research into the structure of crystals, primarily using Xray diffraction methods, these pioneered c. 1912 by W H and W L Bragg and others. The "commercial" two-dimensional designs were soundly based on actual crystal structure data, rather than on purely artistic whims.

This research eventually led to the deduction (1953) of the structure of DNA, among many other important discoveries over a wide field.

It has recently (2012) been reprinted for the Two Braggs public exhibition, which formed part of the ECM28 2013 international meeting at Warwick.

The many images are both beautiful and intriguing, and together with the accessible and comprehensive text serve to present a rich scientific heritage.

Philip Bradfield
Physical Crystallographer


The Strangest Man: The hidden Life of Paul Dirac, Quantum Genius
The Strangest Man: The hidden Life of Paul Dirac, Quantum Genius
by Graham Farmelo
Edition: Paperback
Price: £12.08

5.0 out of 5 stars strange indeed, 2 Dec. 2012
Verified Purchase(What is this?)
I remember attending his (post-grad) lectures (Cambridge) 1963-64: a lot of BRAs and KETs

The Institute of Physics gave it a good review!


Fun Fly Magic Stick Refill Pack
Fun Fly Magic Stick Refill Pack

2.0 out of 5 stars misleading fun fly stick image, 6 Oct. 2012
fun fly magic stick "refill":

A pity that the advert shows the actual static-generator (fun-fly magic stick) (which is NOT offered) , rather than the (refill) foil shapes (i.e. these are on offer) !
In effect, very deceptive !


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