Title: Melbourne.
Question: During which seasons are Melbourne's temperature differentials most pronounced?

Title: Light-emitting diode.
Question: The current in non-radio communication had to go through what type of component?

Title: John von Neumann.
Question: In von Neumann's model what does p represent?

Title: Alfred North Whitehead.
Question:
After moving away from mathematics, what subjects did Whitehead explore?