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John Close

As seen in: Medium, Physical Review B, Optica, HNGNews.com, SPEED SPORT, Daily Jefferson County Union, FHM South Africa

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Articles

Rich Bickle Jr. tribute 'Barnyard To Brickyard 150' set for Saturday at Jefferson Speedway

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By John Close
| HNGNews.com Verified
Rich Bickle Jr., who drove his first-ever race at Jefferson Speedway in 1977 and later rose through the ranks to compete in 218 NASCAR premier series events, will be honored as part of ‘Barnyard To Brickyard 150’ at Jefferson Speedway on Saturday, July 19. The evening will feature a full night of racing action with twin 75-lap super late model headline main events supported by competition in the Midwest Truck Series and Legends divisions.
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Digital stabilization of an I/Q modulator in the carrier suppressed single-sideband mode for atom interferometry

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By Simon A Haine, John Close, Ryan Thomas, Arif Ullah
| Optica Verified
We present an all-digital method for stabilizing the phase biases in an electro-optic I/Q modulator for carrier-suppressed single-sideband (CS-SSB) modulation. Using programmable logic on the Red Pitaya STEMlab 125-14 platform, we digitally generate and demodulate an auxiliary radio-frequency tone whose beat with the optical carrier probes the I/Q modulator’s phase imbalances.
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Numbers On A Screen

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By John Close
| Medium
Money is a video game.
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