Energy-time uncertainty exemplified by lifetime broadening - PhysLab

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Energy-time uncertainty exemplified by lifetime broadening

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A neon lamp is placed inside a spectral tube holder and the emission spectrum is observed with a fiberNeon3 optics spectrometer. The spectrum is loaded into a data analysis software. Some peaks are chosen, notably the 633 nm transition seen in HeNe lasers. The linewidths are determined and the lifetime of the excited states are estimated. This is a nice straightforward demonstration of the energy-time uncertainty relationship, generally difficult to understand.

Linewidths

Atomic Physics . Modern Physics | Tags: atomic physics, classroom demo, modern physics
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    • Lab-I (ENGG-100/PHY-100/200)
    • Lab-II (PHY 300/500)
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    • Ibn Sahl Corner for Optics
    • Fast Optics
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    • Chasing Cosmic Ray Muons at Physlab
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    • Class Demonstrations
    • PhysDiary
    • Health and Safety
    • Lab Safety
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    • Research Themes
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    • Research Stories
    • Physics WorldCup
      • International Young Physicists’ Tournament (IYPT) 2019
      • International Young Physicists’ Tournament (IYPT) 2018
      • International Young Physicists’ Tournament (IYPT) 2016
    • Hunerkada
    • Grants
    • Theses and Reports
    • Scientific Publications
    • Invited Talks (Selected)
  • Outreach
    • Media
      • Lectures, Podcasts and Interviews
      • Videobytes
      • YouTube Channel
      • Visitors
      • Testimonials
    • The Scientific Mind Through the Eyes of a Physics Experimenter
    • National Laboratory Immersion Program
      • First Lahore 2012
      • Second Sukkur 2013
      • Third Lahore 2014
      • Fourth Lahore 2016
    • Labview Workshop 2016
    • Open house
      • 2009-2015
      • Open house 2023
    • Khwarizmi Science Society
    • Helping Pakistan’s Universities
      • National University of Technology (NUTECH) 2019
      • Pakistan Institute of Engineering and Applied Sciences
        (PIEAS) 2019 (Final Phase)
      • Pakistan Institute of Engineering and Applied Sciences
        (PIEAS) 2019 (Phase 2)
      • Pakistan Institute of Engineering and Applied Sciences
        (PIEAS) 2018 (Phase 1)
      • National University of Science & Technology 2016
      • Habib University 2014
      • Preston University 2013
      • Ghulam Ishaque Khan Institute of
        Engineering Sciences and Technology 2011
      • Institute of Space Technology 2010
    • The National STEM School
      • STEM School (2018 – 2019)
      • STEM school (2016 – 2017)
    • Abdus Salam Memorial Lecture Series
  • Facilities
    • Laboratories
    • Equipments
    • Devices & Softwares
      • PhysPlot
      • Physlogger
      • Phystrack
    • Mechanical Workshop
    • Inventory
    • 3D Printed Galleria
    • Forms
    • Equipment Howto’s
  • PhysGPT
  • Contact Us