大学物理 ›› 2020, Vol. 39 ›› Issue (9): 41-46.doi: 10.16854 /j.cnki.1000-0712.190476

• 物理实验 • 上一篇    下一篇

星芒现象的理论与实验研究

王莹,周渝涵,夏往所   

  1. 中国矿业大学材料与物理学院,江苏徐州221116
  • 收稿日期:2019-10-25 修回日期:2020-02-16 出版日期:2020-09-20 发布日期:2020-09-25
  • 作者简介:王莹( 1988—) ,女,汉族,云南玉溪人,中国矿业大学材料与物理学院讲师,博士,主要从事凝聚态物理、光电多功能材料与器件研究.
  • 基金资助:
    中国矿业大学教学研究项目( 2018QN36) 资助

Study on the phenomenon of star-burst

WANG Ying,ZHOU Yu-han,XIA Wang-suo   

  1. School of Materials and Physics,China University of Mining and Technology,Xuzhou, Jiangsu 221116,China
  • Received:2019-10-25 Revised:2020-02-16 Online:2020-09-20 Published:2020-09-25

摘要: 本文对有趣的物理现象———星芒现象进行了理论与实验探究.通过对相机拍摄成像过程建立物理模型,利用夫琅禾费衍射理论对星芒产生的过程行了理论分析.然后从理论和实验上对比探究了相机光圈形状、光圈大小、入射光波长、相机和光源的距离等因素对星芒形成的影响.最后给出了在夜晚拍出明显星芒的建议.

关键词: 星芒, 衍射, 影响因素

Abstract: In this paper, the interesting phenomenon of star-burst ( which arose from the pictures taken from bulbs at night) is investigated theoretically and experimentally. Through properly simplifying the physical model of photographing process, the star-burst is analyzed theoretically depending on Francophile diffraction theory,with the influencing factors including the aperture shape,aperture size, incident wavelength and camera distance,etc. Then the influencing factors for star-burst has been systematically studied through contrast experiments. Further comparison on the results got from theoretical and experimental methods has been methodically carried out. Finally,advice for how to obtain obvious star-burst is given.

Key words: star-burst, diffraction, influencing factors