US$ 20.00
Class-pack of economy handheld spectroscopes fitted with a rotating slit cap and internal diffraction grating for identifying constituent wavelengths in visible light sources
this ball bearing roller coaster kit demonstrates potential and kinetic energy conversion plus forces and motion concepts
DURABLE & STURDY || Both burette and reservoir are made of precisely bore high quality
Metal spouting cylinder with multiple outlet holes at different heights
Six ovule orientations — orthotropous
Aluminum Leslie's Cube, 10 cm Sides Meters_Electrical Class-pack of economy handheld spectroscopesDemonstrates how surface finish affects thermal radiation, comparing the blackened, roughened, varnished, and polished faces of a water heated metal cube with an infrared sensor.
US$ 20.00
US$ 32.38
US$ 1462.17
US$ 22.00
US$ 16.81
US$ 18.00
US$ 24.00
US$ 18.00
US$ 30.78
US$ 33.21
US$ 35.71
US$ 989.00
US$ 1749.50
US$ 20.46