X-rays simply explained : a handbook on Röntgen rays in theory and practice (1904)
Howgrave-Graham, Robert Pickersgill, 1880- · London : Percival Marshall & Co · leaf 111
0(1 \ I! \\s SIMIM.V KXIM.AINKI) ri.Aii VI … PRACTICAL X-llAV \\()i:K 107 veiitioii of a shutter moved Kynehr«uioii.sly with llieHashes pnxhiced ])y th(5 sources. II. lioas (employeda special Lul»e with two anti-cathodes, excited altei*nately by two similai- spaik coils and a sjieciallyadapted mercury interrupter. Few amateurs willfind the…
X-rays · Radiography
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