At first, Claude did not think about a neon lamp. He wanted to extract pure oxygen to sell it to hospitals and welders. But the oxygen kept coming with a retinue of inert gases. Driving the unwelcome guests into tubes under low pressure, he discovered that the tubes were glowing: those with neon were glowing red, while tubes with argon generated blue light. That was when the entrepreneur's head came aflame. And the streets in cities and towns lit up.
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«В мире науки»
What saints did the conquistadors pray to and why did they decide to conquer Mexico? What was the ethnic, regional, and age composition of the Conquista?