• Includes 2 slit plates and holders• Mounting rod to enable use with the optics benches• No blackout required• Excellent alternative to traditional rayboxes• Gives a better white than conventional lamps• Powered by a 5V plugtop (supplied)• Long life, low power LED (1 watt 10,000 hours) instead of a 24/36W bulb• Runs cooler than traditional ray optics boxes• Voltage cannot be accidentally’ increased and blow the bulb• Improved design with integral slit plate holderLED.white can be used in most experiments in place of a ray box and offers many advantages. Spectra produced using prisms or diffraction gratings are bright and clear, from red through to violet. It can be mounted on a retort stand or optics bench using the mounting rod in the LED.white experiment kit. Includes an experiment guide on CD.