Inverting Spectacles, With Two Fully Rotating Inverting Prisms In A Shielded Spectacle Frame, The Inverting Prisms Produce A Lateral Inversion Of The Rays-The World Thus Turns Upside Down, This Also Enables A Better Understanding Of The Visual Perception Of Babies.
ultrasonic Continuous Wave Generator With Probe, Power Consumption: 5-60 Va; Failure at 100 Va, Mains Voltage: 90-230 V, 50/60 Hz, Fuse: T630 Ma at 115 V; T315 Ma at 230 V, Generator Frequency: </=20 Mhz, Frequency Increment: 1 Hz
Cookie Jar Mystery Summer camp, For Grades 4-5, Pre-printed student books speed up teacher prep time and helps students' organize their key findings while working to solve the Cookie Jar Mystery, Accompany both the Classroom and Summer Camp
Go Direct Projectile Launcher to investigate important concepts in two-dimensional kinematics. Launch steel balls at angles between 0 and 70 degrees and over distances up to 2.5 m. Built-in photogates and angle markings provide easy and accurate measurement
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