A15 road (England) A15 road (England) The A15 is a major road in England. It runs north from Peterborough via Market Deeping, Bourne, Sleaford and Lincoln along a variety of ancient, Roman, and Turnpike alignments before it is interrupted at its junction with the M180 near Scawby. The road restarts east, and then continues north past Barton-upon-Humber, crossing the Humber on the Humber Bridge before terminating at Hessle near Kingston upon Hull. According to the AA, the route is long, and should take 2 hours. Norman Cross – Bourne takes 33 minutes, Bourne to Lincoln takes 46 minutes and Lincoln to the Humber
A15 phases years, several other AB superconductors were found. Niobium-germanium held the record for the highest temperature of 23.2 K from 1973 until the discovery of the cuprate superconductors in 1986. It took time for the method to produce wires from the very brittle A15 phase materials to be established. This method is still complicated. Though some A15 phase materials can withstand higher magnetic field intensity and have higher critical temperatures than the NbZr and NbTi alloys, NbTi is still used for most applications due to easier manufacturing. NbSn is used for some high field applications, for example high-end MRI scanners and