Frederiksen
Semi circular Refraction Dish
Semi circular Refraction DishThis open prism can be used in optics experiments to identify the refractive index of different liquids, as the exit angle in relation to the plumb line for the light source can be read at the bottom of the prism.
Note The material is plastic and is therefore not resistant to alkaline or acidic liquids, and it is therefore recommended that the prism be cleaned after use.
Silicon tubing Ø 2/4 for Horizon set 1m
Silicon tubing Ø 2/4 for Horizon set 1m
Single dipper
Single dipper
Skeleton front & back – Poster
Skeleton front & back – PosterBeautiful and colorful poster with practical lamination. English text.
Skin, block model, Small
Skin, block model, SmallA compact model of human skin, made of soft and durable plastic.
Skull: Human, homo sapiens
Skull: Human, homo sapiensCast of a first-class life-size human skull.
Slide artery and vein of mammal, t.s.
Slide artery and vein of mammal, t.s.Microslide of mammalian artery and vein, cross-section. The slide is a single slide for microscopic examination in science subjects.
Slide chicken, blood smear
Slide chicken, blood smearMicroscopy with chicken blood smear (Gallus domesticus). Johannes Lieder microscopy is of high quality and is manufactured with great care.
Slide motor nerve cells
Slide motor nerve cellsMicroscopy of motor nerve cells, smear from spinal cord. The color and shape of the specimen may differ from the images due to natural variations in biological material. Each smear is unique and carefully crafted by hand so individual variations occur.
Slide, DNA, cell division
Slide, DNA, cell divisionThis microslide shows mitotic cell divisions in the root tip of onion and is prepared to illustrate stages of mitosis.
Slinky spiral spring – 10 m
Slinky spiral spring – 10 mUsed to demonstrate longitudinal fluctuations.
Slinky spring – 5 m
Slinky spring – 5 mThis iron spring is suitable for demonstrating wave oscillations.
Slotted weights with holder
Slotted weights with holderUsed for accelerating an air track cart. The set consists of a 2 g holder, 2 weights of 1 g, 1 weight of 2 g, 1 weight of 5 g, 1 weight of 10 g. Total weight: 21 g. The combined weight can thereby be varied from 2 g to 21 g in steps of 1 g.
Slotted weights with holder
Slotted weights with holderWear soldering iron with holder, in brass.
Smartphone adapter for microscopes
Smartphone adapter for microscopesWith this solid adapter – made of aluminum – it is very easy to take good pictures with a smartphone through the eyepiece of the microscope.
Smartphone adapter with eyepiece for microscopes
Smartphone adapter with eyepiece for microscopesWith this solid adapter, it is easy to take good pictures with a smartphone through the eyepiece of the microscope.
Smoke chamber for Brownian motion
Smoke chamber for Brownian motionFor demonstrating Brownian motion in smoke with a (stereo) microscope.
Sodium chloride molecule model
Sodium chloride molecule modelMolecular model of “Sodium Chloride”.
Contains 36 atomic balls and 80 links.
The model is delivered unassembled, but with assembly instructions
Soft iron bars, painted
Soft iron bars, paintedThe same size as bar magnet 330510. With poles painted like a magnet. Set of 2.
