Frederiksen
Finger pulse oximeter
Finger pulse oximeterThe fingertip pulse oximeter is a small electronic measuring device that uses an infrared sensor to measure blood oxygen saturation (SpO₂), pulse rate and respiratory rate.
Flag with plug 100 mm
Flag with plug 100 mmUsed as a flag for photogates in time measurements on the air track.
Flag with plug, 25 mm
Flag with plug, 25 mmUsed as a flag for photogates in time measurements on the air track.
Floating globe
Floating globeThe globe is suspended from an electromagnet. This makes the friction very low and the earth will rotate at a constant speed for many hours after being spun around.
Diameter: 20 cm
AC adapter included.
Fluorescent plate, 70×95 mm
Fluorescent plate, 70×95 mmPlate that fluoresces when illuminated by UV light. Can be used to demonstrate fluorescent chemicals and which materials block UV light.
Folding magnifier, small
Folding magnifier, smallNice little botanist’s magnifying glass in a solid metal housing. 10x magnification and lens diameter of 18 mm. However, the visible (active) part of the lens is 15 mm in diam. Supplied in a practical small plastic box.
Force gauges, set in case
Force gauges, set in caseNine different precision dynamometers/force gauges of types FR-103800 – FR-103880 with ranges 0.1-0.2-1-2-5-10-20-50-100 Newton.
Supplied in a handy, foam-lined, partitioned case.
Case size: 327 x 275 x 55 mm.
Fossil set, 8 fossils
Fossil set, 8 fossilsSet of eight representative fossils: trilobite, tooth from extinct shark, sea lily, brachiopod, ammonite, tooth from marine lizard, orthoceras and limestone with typical fossils from the Norwegian Cambro-Silurian. Supplied in a plastic box; fine specimens can be taken out and studied more closely. Composition may vary. Norwegian instructions included.
Free-fall apparatus
Free-fall apparatusThis experimental equipment can be used for experiments with the movement of objects, and it can thus be used to determine the gravitational acceleration g based on the fall time and the fall length, as the following relationship applies:
where h is the drop height.h
Friction block, area
Friction block, areaBlock with a hook for demonstrating the relationship between friction and different surfaces. Two versions available. Area: Two different surface contact areas.
Friction block, roughness
Friction block, roughnessRoughness: Four different surface materials: rubber, felt, sandpaper and wood.
Fuel cell set, Dr FuelCell
Fuel cell set, Dr FuelCellComplete energy kit containing various sources for the production of green energy.
The set includes a combustion cell, a solar cell for power supply for the electrolysis apparatus, and a measuring instrument for measuring the total amount of energy. In addition, data can be transferred to a PC for further analysis. Software is included on CD or as a download on Horison’s website. A guide with experimental examples is also included.
Fuel cell vehicle, Hydrocar
Fuel cell vehicle, HydrocarExperiments can be set up with this hydrogen car. where it is shown that electrolysis with power from the solar panel can be used to produce the hydrogen that the car is powered by using hydrogen combustion in the fuel cell.
Fuel cell, dismantlable
Fuel cell, dismantlableThis fuel cell can be dismantled, so its constituent parts can be studied.
Fuel cell, ethanol
Fuel cell, ethanolThis fuel cell kit with propeller contains a fuel cell that produces power from an ethanol solution of up to 15%. This makes it possible to investigate how the effect from the fuel cell changes with different ethanol solutions. There is also the option of making power outlets for other power consumption, e.g. bulbs or motor. A pH paper is included to examine changes in the pH value in the residual product from the energy process with the ethanol used.
Function generator
Function generatorThis function generator is developed and produced by Frederiksen Scientific and is suitable for, for example, experiments with standing waves or for studying sound waves at different frequencies. The generator can run through frequencies in intervals of ten decades from 0.001 Hz to 10.00 MHz with a tolerance of just 0.005%.
