"There was something ghost-like and insubstantial about gases to these early chemists. They called liquids that turned into gases easily, "spirits." Me...

Have you ever come across something you couldn't explain?""Explain in what way? I could explain a ghost by saying, 'yes, that's a ghost.' I take it that's not what you mean.
Have you ever come across something you couldn't explain?""Explain in what way? I could explain a gh...
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