matrix: A surrounding material where another material originates (precipitates), develops or is contained. Using an oven mitt, pour the resin into the aluminum foil mold. Make sure that all of the reinforcements are in the mold with the resin. To support this mission, the RAF invested heavily in navigation training, equipping their aircraft with various devices, including an astrodome for taking a star fix and giving the navigator room to do his calculations in an illuminated workspace. This system was put to use as soon as the war began and was initially regarded as successful. In reality, the early bombing effort was a complete failure, with the majority of bombs landing miles from their intended targets. [3] Hooton, Edward (1994). Phoenix Triumphant: The Rise and Rise of the Luftwaffe. Arms & Armour. ISBN 978-1-85409-181-9. OCLC 974279361. The British believe that, through ingenuity and scientific prowess, they alone have a war-winning weapon: radar. They are wrong. The Germans have it too.

ceramic: Hard, brittle, heat-resistant, good thermal and electrical insulators, corrosion-resistant covalent and/or ionic-bonded metal/non-metal and non-metal/non-metal materials. It turned out their conclusion about code name Wotan was incorrect as it did not in fact imply a single beam. Jones 1978, p. 177 The Lorenz beam and its two lobes. Note that the "equisignal" area in the centre grows narrower, and more accurate, as the aircraft approaches the runway Brown, Louis (1999). A Radar History of World War II: Technical and Military Imperatives. CRC Press. ISBN 978-1-4200-5066-0. For the fabrication procedure, prepare enough reinforcement selections for all groups. First prepare the long spaghetti noodles by breaking them into 2- to 3-inch long lengths. Then measure out 3-4 g (~5 ml) of the shorter spaghetti noodles, rice and Nerds® candies and place them into individual plastic containers.British monitors soon started receiving intelligence from Enigma decrypts referring to a new device known as Y-Gerät, which was also sometimes referred to as Wotan. [31] Jones had already concluded the Germans used code names that were too descriptive, so he asked a specialist in the German language and literature at Bletchley Park about the word Wotan. The specialist realised Wotan referred to Wōden, a one-eyed god, and might refer to a single-beam navigation system. [31] Jones agreed, and knew that a system with one beam would have to include a distance-measurement system. He concluded that it might work on the basis described by the anti-Nazi German mathematician and physicist Hans Mayer, who while visiting Norway had provided a large amount of information in what is now known as the Oslo Report. [b]

The British were ready for this system even before it was used. By chance, the Germans had chosen the operating frequency of the Wotan II system very badly; it operated on 45 MHz, which just happened to be in the frequency range of the powerful-but-dormant BBC television transmitter at Alexandra Palace. [27] All Jones had to do was arrange for the return signal to be received from the aircraft and then sent to Alexandra Palace for re-transmission. The combination of the two signals modified the phase shift — and thus the apparent transit delay. Initially, the signal was re-transmitted at low power, not powerful enough for the Germans to realise what was happening, but enough to spoil the accuracy of the system. Over subsequent nights, the transmitter power was gradually increased.

ductility: Ability of a material to undergo permanent deformation through cross-section reductions and elongation without fracture.