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Measurement of Apparent Accommodation with a 20 / 20 Near Vision Optotype

โœ Scribed by Yoshiaki Nawa; Mieko Nakatsuka; Toshiaki Yoshii; Masaya Kominami; Yoshiaki Hara; Hiroshi Uozato

Book ID
114044275
Publisher
Springer
Year
2001
Tongue
English
Weight
34 KB
Volume
45
Category
Article
ISSN
0021-5155

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๐Ÿ“œ SIMILAR VOLUMES

Tunnel diode oscillator circuit for surf
Tunnel diode oscillator circuit for surface impedance measurement of thin films near 20 MHz
โœ A. Omari; A.F. Khoder ๐Ÿ“‚ Article ๐Ÿ“… 1993 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 512 KB

We describe and analyse a simple method for the measurement of thin film surface impedance in the frequency range 10-20 MHz. This method is based on the analysis of both the frequency shift and the amplitude variation of the signal in a tunnel diode oscillator circuit inductively coupled to the samp