About
All Feedback (142)
- _***c (114)- Feedback left by buyer.Past yearVerified purchaseGood communication and the seller was very helpful in putting the item into the car for me. Defiant recommend this seller. Thank you!
- a***k (21)- Feedback left by buyer.Past yearVerified purchaseProjector as described, in original packaging and fully working, thank you.
- a***r (344)- Feedback left by buyer.Past yearVerified purchaseBrilliant seller, fast shipping
- s***m (1936)- Feedback left by buyer.Past yearVerified purchaseExellent service and communication Cheers
- r***p (382)- Feedback left by buyer.Past yearVerified purchaseImmaculately packaged with care. Great comms and a pleasure to deal with. Very pleased with my purchase. Many thanks! A++++
- o***e (1441)- Feedback left by buyer.More than a year agoVerified purchaseRecommended ebay seller, just as described.
Reviews (4)

01 Jul, 2020
Very logical and well explained. I highly recommend the book. Thank you to the author for sharing some of his knowledge in such an informative manner.
This is a very good optics book. It starts in what I think is the optimal manner for introducing one to optics:
Mechanical displacement waves on a tensed string, then the electromagnetic theory and afterwards the rectilinear approximation and optical elements and more complex phenomena.
It is one of my favourite optics books. Another is Hecht's Optics.
I certainly recommend it to someone who wishes to learn optics without skipping steps.

18 Jun, 2020
This is a high quality product as indicated by the feel, weight and sounds it makes when used.
This is a high quality product as indicated by the feel, weight and sounds it makes when used.

22 Aug, 2020
Cleaned amplifier terminals and controls/ formidable quality and quantity for the asked price/ highly recommended
I bought this contact cleaner to reduce the crackling noise and uneven channel output of my Kenwood amplifier. It worked beautifully, for the volume, bass, treble, balance controls as well as for the four speaker terminals.
One note: sole liquid fell on the printed circuit board (PCB) of the amplifier. From the stickiness of the fluid cleaned off the PCB I concluded that it may dissolve the protective layer coating it.
This is a very good product with a remarkable price for the quality and quantity of product content.
I highly recommend this electronic contacts cleaner.