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 Lochnagar mine crater is one of several which remain visible on the Western Front today. In the Somme area, others may be seen at Hawthorn Ridge near Beaumont Hamel and on the edge of High Wood. Others can be seen in Flanders, particularly around Messines.ust off the D929 on the right (towards the Lochnagar crater) is the la Boiselle Tyneside memorial seat. This location is just to the north-west of the 'Glory Hole' and also almost exactly on the British front line of July 1st, 1916.