Thesis Chapters by Oliver Lambson
Work done:
Theoretically determine and experimentally demonstrate the effect a magnet has on the ... more Work done:
Theoretically determine and experimentally demonstrate the effect a magnet has on the vibration of a ferromagnetic string.
Objectives:
(1) Investigate and characterise – analytically, numerically, and experimentally – the effects of the electromagnetic interactions of an electric guitar pickup on the vibration of a ferromagnetic guitar string.
(2) Design a vibration measuring system that measures the position of a point along the string versus time and does not have any force interactions with the string.
Findings:
The presence of a magnet near a vibrating string appears to reduce the magnitudes of the harmonics near the mode with a node closest to the location of the magnet. The magnet exhibited no observable effects on the string’s vibration that could be interpreted as having a damping effect.
Papers by Oliver Lambson
Transmission of SARS-CoV-2 without symptoms is well described, and may be mitigated by mass testi... more Transmission of SARS-CoV-2 without symptoms is well described, and may be mitigated by mass testing. Nonetheless, the optimal implementation and quantitative real-world impact of this approach remain unclear. During a period of rising SARS-CoV-2 prevalence, students at the University of Cambridge were enrolled in a voluntary programme of weekly PCR-based asymptomatic screening. Swab pooling by household reduced the total testing capacity required by five-fold, without affecting laboratory workflows or compromising test sensitivity. Participation remained >75% throughout the study period. 299/671 (45%) of students diagnosed with SARS-CoV-2 were either identified or pre-emptively quarantined because of the screening programme. After a negative screening test, the risk of developing COVID-19 over the following 7 days was decreased by 51%. Modelling transmission using parameters from our study suggests a reduction in R0 of up to 31% attributable to weekly screening. We therefore demo...
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Thesis Chapters by Oliver Lambson
Theoretically determine and experimentally demonstrate the effect a magnet has on the vibration of a ferromagnetic string.
Objectives:
(1) Investigate and characterise – analytically, numerically, and experimentally – the effects of the electromagnetic interactions of an electric guitar pickup on the vibration of a ferromagnetic guitar string.
(2) Design a vibration measuring system that measures the position of a point along the string versus time and does not have any force interactions with the string.
Findings:
The presence of a magnet near a vibrating string appears to reduce the magnitudes of the harmonics near the mode with a node closest to the location of the magnet. The magnet exhibited no observable effects on the string’s vibration that could be interpreted as having a damping effect.
Papers by Oliver Lambson
Theoretically determine and experimentally demonstrate the effect a magnet has on the vibration of a ferromagnetic string.
Objectives:
(1) Investigate and characterise – analytically, numerically, and experimentally – the effects of the electromagnetic interactions of an electric guitar pickup on the vibration of a ferromagnetic guitar string.
(2) Design a vibration measuring system that measures the position of a point along the string versus time and does not have any force interactions with the string.
Findings:
The presence of a magnet near a vibrating string appears to reduce the magnitudes of the harmonics near the mode with a node closest to the location of the magnet. The magnet exhibited no observable effects on the string’s vibration that could be interpreted as having a damping effect.