{"version":"1.0","type":"link","title":"Grenz rays - Newikis","description":"Grenz rays are part of the electromagnetic spectrum comprising low energy (ultrasoft) X-rays. These were first investigated by Gustav Bucky in 1923 using a cathode vacuum tube with a lithium borate glass window, which he labeled Grenz rays as he believed that the biological effects resembled those…","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400}