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.
Lochnagar Crater. Description: On the 1st July 1916, the men leaving their positions for battle at 7:30am had no idea that they were going towards almost certain death. Just before the infantry assault began, several mines were blown, which were intended to destroy parts of the German front line and create huge craters.he Friends of Lochnagar Association, chaired by Richard Dunning, maintains the crater and organises each 1st July a very moving ceremony which starts at 7:30am, and commemorates the beginning of the Battle of the Somme.