What was one major environmental factor NASA required watches to withstand during the early 1960s selection process?
Answer
Intense vibrations
NASA required watches to withstand extreme environmental variations, which explicitly included intense vibrations, along with high and low temperatures, humidity, and rapid depressurization.

Related Questions
What was one major environmental factor NASA required watches to withstand during the early 1960s selection process?What specific reference number model of the Omega Speedmaster Professional did Buzz Aldrin famously wear on the lunar surface?What specific part failed on David Scott's *Bulova* chronograph during the Apollo 15 mission?What inherent advantage did the Speedmaster's mechanical nature offer over early quartz or digital watches in space?What official designation did the Omega Speedmaster receive after passing NASA's rigorous trials?The often-cited incident involving a crystal popping off during a Moon mission actually involved which non-qualified watch?How did the Speedmasters perform their duties during the Apollo 11 mission itself?What specific engineering effort was undertaken by Omega to ensure lug survival during qualification testing?What does NASA's continued reliance on the Speedmaster, even when newer options were available, imply about the watch?What is noted as the post-mission fate of Buzz Aldrin’s specific Omega Speedmaster Professional?How did the conditions in the qualification tests compare to the actual conditions encountered on the Moon's surface during early missions?