1. An acoustic radiometer consisting of a light disk suspended from a quartz thread; when exposed to a progressive sound wave its torque can measure velocity

Type of: radiometer

• Trogium pulsatorium
• troglodyte
• Troglodytes
• Troglodytes aedon
• Troglodytes troglodytes
• Troglodytidae
• trogon
• Trogonidae
• Trogoniformes
• Troic
• troika
• troilite
• trojan
• trojan horse
• Trojan War
• troll
• troller
• trolley
• trolley car
• trolley coach
• trolley line
• trolleybus
• trolleyed
• trolling
• Trollius