Lascells
Reaction Timer
Reaction TimerFor use with Lascells timers. The subject presses the START button and after a short random delay the light comes on. The subject has to press the button as quickly as they can in response. The timer records the interval between the light coming on and the button being pressed. No power supply required.
Resistance Selector
Resistance SelectorMini substitution unit using a single rotary switch to select from twelve values all at 5% 0.5W.
Resistance Substitution Box
Resistance Substitution BoxA robust Resistance Substitution Box rated at 2W. Resistors are selected by means of 4mm sockets and can be arranged in series to give the full range from 1 to 12,221Ω.
Resistance Wire Board
Resistance Wire BoardThe Resistivity Board provides four wires of the same diameter but different materials.
Resistor Kit A
Resistor Kit APacks of 10 resistors covering the range 120Ω to 2.2MΩ, 5% tolerance together with 100 resistors 22kΩ on a bandolier.
Resistor Kit B
Resistor Kit BAlso for Advancing Physics Sensing Unit 110E. Five colour-sleeved resistors of values 300kΩ, 100kΩ, 75kΩ, 150kΩ and 100kΩ all at 5% tolerance.
Resolved Forces Board
Resolved Forces BoardBy using spring balances on an easy to understand layout the concept of balanced and resolved forces is easy to demonstrate. The attachment points can be put in line for collinear forces where the single force is the sum of the other two. For 2D work, angles and vectors can be easily examined. The durable white plastic-coated board measures 800 x 450mm and comes complete with balances and full instructions.
Resonance System
Resonance SystemThis original apparatus gives students a modern approach to a fascinating topic with great scope for imaginative research.
Ripple Tank MkIII
Ripple Tank MkIIIThis compact unit provides an elegant method of demonstrating the wave phenomena of reflection, diffraction, refraction and interference with none of the setting-up problems usually associated with ripple tanks. The concept has been further developed to offer new features and simplicity in this MkIII design.
Rotary System
Rotary SystemThis simple but effective system makes a complicated topic into one of the most enjoyable lessons possible for all ages at secondary level.
It allows students to easily investigate the forces of circular motion so that they get hands-on experience of the effects.
Rotary Table
Rotary TableA strong turntable suitable for rotational motion demonstrations.
Rubens Tube
Rubens TubeA truly exciting way to show the effect of sound waves in action, the Rubens Tube really brings the topic to life in a way the students will never forget. The robust stainless steel welded construction means trouble free operation for many many years.
Search Coil
Search CoilA 3300 turn, 25mm diameter coil on a plastic handle for investigating changing magnetic fields.
Slide Carrier
Slide CarrierA simple acrylic carrier to hold standard slides 50 x 50 x 2mm such as Young’s slits
Product code: LA20-882
Space Tube
Space TubeA modern replacement for the Bell in a Bell Jar Apparatus. A 90mm diameter acrylic tube houses a battery-operated, high output piezo sounder.
Spare Tube For Polarimeter
Spare Tube For PolarimeterA flat bottomed glass tube of the type used in the Student Polarimeter
Spectral Lamp Power Supply
Spectral Lamp Power SupplyThe Lascells Spectral Lamp PSU features a specially designed inverter circuit design for low pressure sodium lamps. It delivers a high ignition voltage during start up, then the supply then drops to a consistent voltage and current to ensure reliable operation of spectral lamps. Featuring over-voltage protection and an easy-to-use interface, ensuring safe operation in educational settings.
Spectral Source
Spectral SourceThis unique unit has been specially developed to provide a varied range of light sources for examination by spectrometers.
Speed of Sound
Speed of SoundThis is an easy to use piece of apparatus for determining the speed of sound in air.
The unit contains two sensitive microphones connected to control circuity that will start and stop a Lascells millisecond or microsecond timer. Alternatively the outputs may be monitored on a storage or pc oscilloscope.
