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.
On the morning of 1 July 1916, the British army detonated a mine in the village of La Boisselle, just north of Albert in France. It was the first day of the Battle of the Somme, during the First World War.he Friends of Lochnagar Association, chaired by Richard Dunning, maintains the crater today and organizes a memorial ceremony every July 1st, at 7:30am, to commemorate the beginning of the Battle of the Somme. It is possible to walk all around the edge of the crater, but access to the crater itself is not permitted.