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DTSTAMP:20240305T223000Z
UID:1709582758793@thor.lawrence.edu
CATEGORIES:Other
DTSTART:20240305T223000Z
DTEND:20240306T055900Z
SUMMARY:Senior Experience Seminar Series in Physics - 
 2024
CONTACT;ALTREP="mailto:matthew.r.stoneking@lawrence.edu":
 Matthew R. Stoneking\, matthew.r.stoneking@lawrence.edu
DESCRIPTION:
 Kate Superka - Characterizing the Variations in 
 Magnitude of the Star \n
 Betelgeuse Before and After the Great Dimming 
 \n
 During the event astronomers have dubbed the Great 
 Dimming, the star Betelgeuse experienced an extreme 
 dip in its brightness. While variations in brightness 
 aren't uncommon, this dip was much more extreme 
 than normal. Betelgeuse has held the fascination 
 of astronomers even before this event took place 
 due to its likelihood of dying and going supernova, 
 an event that hasn't occurred in our galaxy since 
 1604. But the Great Dimming event caused an extreme 
 increase in the number of people making measurements 
 of the star's apparent magnitude, meaning that 
 photometric data is much more readily available 
 to the public. In this talk, I will be discussing 
 my analysis of two different sets of photometric 
 data on Betelgeuse from before and after the Great 
 Dimming, and how this event has affected the periodic 
 nature of the star's light curve. \n
 \n
 Sam Schulte - Timbre, Tuning, and Dissonance: 
 An Investigation into the \n
 Unique Acoustic Properties of the Balinese Gamelan 
 \n
 In this experiment, we investigate the acoustic 
 properties of various Balinese gamelan instruments 
 in comparison to those of Western instruments. 
 Taking advantage of the set of instruments owned 
 by Lawrence University, we collected spectrogram 
 data representing the five tones comprising the 
 pelog scale specific to the Lawrence ensemble 
 on two different instruments. We were then able 
 to construct dissonance curves that represent 
 perceived sensory dissonance of the fusion of 
 two tones based on an instrument's harmonic spectrum. 
 We use this data to both provide a physical basis 
 for many of Balinese gamelan's distinct timbral 
 characteristics as well as to examine the phenomenon 
 of sensory dissonance in the context of an ensemble 
 utilizing non-Western scales and tuning conventions.\n\n

LOCATION:Youngchild Hall 121
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