SPAD = Signal Passed At Danger
I.e. the train did not stop at a red signal, but carried on some distance further.
spad
American Spad 13 German Fokker VR1 Triplane British Spad 7 German Alvatross D3
Spad 13
There was; Spad and that's pretty much all.
The biplanes used in World War I included the SPAD (usually the model S.XIII, as opposed to the earlier S.VII and S.XII), which was built by the French company "Societé pour Aviation et ses Dérivés". Although the French acronym may have had the pronunciation "spodd", subsequent American pilots called it the "spadd". The acronym SPAD is also used by modelists for "Simple Plastic Airplane Design".
During WW1 Rickenbacker few a SPAD XIII
There was; Spad and that's pretty much all.
In SPAD (Single Photon Avalanche Diode) technology, the measurement unit typically refers to the quantification of light intensity or photon detection. The primary unit used is the count rate, usually expressed in counts per second (cps), which indicates the number of photons detected by the SPAD within a given time frame. Other relevant units may include volts for electrical signals and nanometers for wavelength measurements, depending on the application.
SPAD was a French fighter plane in WW1. The Spitfire was a WWII fighter plane.
British : Sopwith Camel; SE 5a; Bristol F2b; French: Nieuport 13; Spad 7; Spad 13; German: Fokker Eindekker; Fokker DR1 Triplane; Albatross. All of the above were biplanes, slow by modern standards, but aeroplanes had only been in existence for 10 years before WW1.
French 75mm field guns; Renault model 1917 tanks; Spad 13 airplanes were the most popular and successful of allied guns, tanks, and planes.
it was a railroad \