Rose thorns. Close-up of the thorns of a rose bush (Rosa omeiensis pteracantha). This rose is native to western China. It possesses large, red thorns.

---

Size: 3390px × 4155px
Photo credit: © SHEILA TERRY/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 1863, 1878, 1897, alpha, atomic, britain, british, cathode, cathode-rays, charged, chemical, chemist, crookes, electron, element, england, english, fellow, knight, news, particles, physicist, physics, radiation, radiometer, ray, royal, scintillation, society, spectroscope, spectroscopy, spectrum, spinthariscope, thallium, thomson, tube, tubes, vacuum, william