The Zany Quest to Solve Gravity in an Abandoned Bunker Under the Swiss Alps
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When driving up a quiet lane close to the border between Switzerland and Liechtenstein, you’d be forgiven if you glossed over an unassuming wooden shed on the side of the road bearing a sign that reads “Festung Furggels.” Nearly 300 feet under the surface, however, physicists are performing a battery of physics experiments inside a military fortress built during World War II. Their tests aim to nail down the value for a basic yet elusive constant—those in the know call it simply “Big G.”
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