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Keychain: Zernike polynomial Z(8,2) Key Ring
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Keychain: Zernike polynomial Z(8,2) Key Ring
In 1933, Nobel Laureate Frits Zernike published a set of orthogonal polynomials designed to span the unit disc for the purpose of describing the aberrations of a circular mirror. Today these same polynomials are used to codify the imperfections in optical systems such as telescopes. Ophthalmologists and optometrists use them in wavefront guided vision correction. This magnet features the Zernike polynomial of order 8 and angular frequency 2, a complex valued function
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5 out of 5 stars ratingBy Ali Y.4 February 2026 • Verified Purchase
Metal Circle Keychain, 5.08 cm
Lovely & cute keychains i love them thank you sooo much ,they also reached to me soo fast 😍.
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5 out of 5 stars ratingBy Victoria21 August 2023 • Verified Purchase
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Beyond expectations. Choice of artwork is overwhelming, I found exactly what I needed from SJW_Graphics. Detail, colors, overall design looks great on this keyring. Could use as a pendant, purse charm, bookmark, too! Metal is sturdy without being heavy. Colors beautiful, with clear margins. Customized name makes this gift extra special. So many fonts, so many colors & sizes!
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5.0 out of 5 stars rating
5 out of 5 stars ratingBy Zali O.9 August 2023 • Verified Purchase
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These are so cute and beautiful made. Printing is good clear
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Product ID: 146983312322551358
Posted on 14/06/2009, 11:46 AM
Rating: G