Frederiksen
Thermogenerator with motor
Thermogenerator with motorConsists of a Peltier element constructed of 127 series-connected rods of a semiconductor material mounted on a heatsink. The Peltier element can be connected via a switch to two safety sockets ( Peltier effect position ) or to a small motor with propeller ( Seebeck effect position ).
Thomson’s jumping ring
Thomson’s jumping ringFor demonstrating magnetic repulsion caused by the induction current in a closed ring.
Three-color LED light source
Three-color LED light sourceBattery-powered LED laser set consisting of red, green and violet colors. The set is connected with magnets. Batteries are included in the set.
Three-phase generator set
Three-phase generator setThis kit serves as a model of an alternator. The kit consists of two parts, an induction unit with three coils and a round magnet, as well as a variable motor unit that rotates the round magnet.
Timer weight, 0.5 kg
Timer weight, 0.5 kgNickel plated iron weights Ø 32 mm with attachment mechanism for ticker tape timer.
Torso with removable head, mini, 12 parts
Torso with removable head, mini, 12 partsDivisible into 12 parts. Approx. 1/2 natural size. Corresponds in its reproduction of details to life-sized torso models. The model is genderless.
Torso, bisexual, 28 parts
Torso, bisexual, 28 parts2-gender torso in life size.
The torso features a removable head, exposed spine and interchangeable male and female genitalia. A 3-month-old fetus is placed in the uterus.
Comes with detailed instructions that show each part of the torso in color and explain it in more detail.
Transport box for stereomicroscope
Transport box for stereomicroscope
Tube with wax and plug
Tube with wax and plugUsed with 195520 for inelastic collisions on an air track.
Tuning fork for demonstrations, large
Tuning fork for demonstrations, largeThe demonstration tuning fork whose oscillation is so slow that the note cannot be heard (around 5.4 Hz). On the other hand, it is easy to follow its movements with the eyes.
Made of nickel-plated steel.
Length 78 cm
Tuning fork set
Tuning fork setTuning fork set with 8 x different frequencies: 256, 288, 320, 341.3, 384, 426.6, 480, 512 Hz.
Each set can be stored in the included plastic box (325 x 265 mm).
The forks vary in length: 95 mm – 145 mm.
Tuning fork, 440Hz 145 mm
Tuning fork, 440Hz 145 mm
Tuning fork, 440Hz, 120mm (A)
Tuning fork, 440Hz, 120mm (A)
Tuning forks on resonance boxes
Tuning forks on resonance boxesSpare: Runner for tuning fork. Set of two tuning forks in nickel-plated stainless steel. Each mounted on a resonance box in lacquered pine with thick felt pads. Used for resonance and beat experiments.
Universal electrode holder, double
Universal electrode holder, doubleCan be used with both round electrodes 4510xx and plate electrodes 4498xx.
UV lamp, battery operated
UV lamp, battery operatedPortable UV light that can be used for a wide range of applications. Light weight and easy to use.
Vacuum Gauge
Vacuum Gauge
Vacuum pump, 2-stage
Vacuum pump, 2-stageVacuum pump with a wide range of laboratory and industry applications. Sturdy, long-life construction. 2-stage rotary vane vacuum pump with oil injection and lubrication system. Topping-up oil included, but it is recommended to order extra 069530 Vacuum oil.
