The approximate wavelength range of the X-ray portion of the electromagnetic spectrum, 10 to 10 metre, corresponds to a range of photon energies from about 100 eV (electron volts) to 1 MeV (million electron volts).
Lochnagar Crater history. The Lochnagar Crater (Lochnagar Mine Crater) located in the village of La Boisselle in Franceâs Picardie region, is the site where one of the first explosions of the Battle of the Somme took place on 1 July 1916.irections to Lochnagar Crater: Lochnagar Crater is located in farmland just next to the centre of the village of Ovillers-La-Boisselle along route D929, just north east of the town of Albert. It is approx 21 miles north east of Amiens along route D929.
The mine was named after Lochnagar Street, the British trench from which the gallery was driven. It was one of eight large and eleven small mines that were placed beneath the German lines on the British section of the Somme front. The Lochnagar mine was sprung at 7:28 a.m. on 1 July 1916, the First day on the Somme.he Lochnagar mine consisted of two chambers with a shared access tunnel (see map) . The shaft was sunk in the communication trench called Lochnagar Street. It was probably the first deep incline shaft, which sloped from 1:2â1:3, to a depth of about 95 feet (29 m).