Superconducting magnet issues "shaken" out of them, until they are eventually able to operate reliably at their full planned current without experiencing quenches. Although the idea of making electromagnets with superconducting wire was proposed by Heike Kamerlingh Onnes shortly after he discovered superconductivity in 1911, a practical superconducting electromagnet had to await the discovery of superconducting materials that could support large critical supercurrent densities in high magnetic fields. The first successful superconducting magnet was built by G.B. Yntema in 1955 using niobium wire and achieved a field of 0.7 T at 4.2 K. Then, in 1961, J.E. Kunzler, E. Buehler, F.S.L. Hsu,
Heike Shamisen Heike Shamisen The heike shamisen (Japanese: ), is a Japanese musical instrument, member of the shamisen family. Like its other counterparts, the heike shamisen has three strings, a slender neck, a body taut with skin, and it is plucked with a plectrum called a bachi. What is peculiar about the heike shamisen is that it is made particularly for the use in one song, called Heike Ondo, which is a folk song from Shimonoseki, Yamaguchi Prefecture, Japan. As the song calls for a higher range of notes, the heike shamisen is constructed with a shorter neck than conventional shamisen. It