A person who was known for his work in mass spectrometry discovered Uranium-235.
The SEP modular armoured vehicle -LRB- Splitterskyddad enhetsplattform -RRB- , Swedish for `` Fragmentation Protected Standard Platform '' , is a hybrid diesel-electric powered armoured fighting vehicle developed by BAE Systems AB .. armoured fighting vehicle. armoured fighting vehicle. BAE Systems AB. BAE Systems AB. The vehicle is codenamed `` Thor '' .. The first demonstration models were produced in 2000 -LRB- tracked -RRB- and 2003 -LRB- wheeled -RRB- .. It was originally contracted by the Swedish Defence Materiel Administration .. Swedish Defence Materiel Administration. Defence Materiel Administration ( Sweden ). The series-hybrid electric drivetrains for both the wheeled -LRB- SEP-W -RRB- and two generations of tracked -LRB- SEP-T -RRB- vehicles were designed and manufactured by MAGTEC -LRB- Magnetic Systems Technology Ltd , Sheffield , UK -RRB- .. SEP-W was equipped with in-wheel HMED -LRB- Hub-Mounted Electric Drive -RRB- units , each rated at over 100 kW and producing 20,000 Nm at each wheel in low range .. This performance gave the vehicle individual wheel speed , position and torque control , providing electronic limited-slip differential , torque-vectoring , and importantly on-demand skid-steering -LRB- fully laden on dry tarmac -RRB- , enhanced packaging and protection , and greatly improved suspension travel .. SEP-T was equipped with a novel ` cross-drive ' pack incorporating concentric twin-traction and twin-steer motors , giving fully electric ` drive by wire ' steering via the outboard gearboxes .. in both types of vehicle , two high-performance diesel engine / generator sets were installed , providing dual redundancy and further protecting driver and co-driver from side ballistic impacts / penetration .. Power scheduling and operating points for the generator sets provided optimised fuel usage and performance , thus reducing the requirements for refuelling support in the field .. The design of the drivetrains in both vehicle types permitted novel vehicle architectures and optimised crew and payload packaging , without compromising suspension / transmission design or performance .. Both vehicle types were put through extensive testing of performance , durability , EMC etc. , and were designed and constructed to allow straightforward scale-up into volume production .