Fluoroscopy is used in many types of examinations and procedures, such as barium X-rays, cardiac catheterization, arthrography (visualization of a joint or joints), lumbar puncture, placement of intravenous (IV) catheters (hollow tubes inserted into veins or arteries), intravenous pyelogram, hysterosalpingogram, and biopsies.
Lord George Gordon Byron. Lord George Gordon Byron (1788-1824) was as famous in his lifetime for his personality cult as for his poetry. He created the concept of the 'Byronic hero' - a defiant, melancholy young man, brooding on some mysterious, unforgivable event in his past.
Machiavelli is most famous for a short political treatise, The Prince, written in 1513 but not published until 1532, five years after his death. Although he privately circulated The Prince among friends, the only theoretical work to be printed in his lifetime was The Art of War, about military science.