Unverified50% confidenceFactExact time

氦气的密度约为 0.164 kg/m³，远低于空气的 1.225 kg/m³，等体积氦气可提供约 1.06 kg/m³ 的净浮力

1

Sources

50%

Confidence

Long-term

Relevance

7/15/2026

First Seen

Sources

Helium-Powered Soft Floating Robot: An Airborne Indoor Companion Is Here

Related Claims

Unverified空气密度约为1.225 kg/m³75% similar UnverifiedPM2.5 refers to particulate matter with an aerodynamic diameter of less than 2.5 micrometers, while ultrafine particles (UFP) have a diameter of less than 0.1 micrometers.60% similar

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