Waterproof flashlight with a zoom CD7217
LASER POINTER • length: 15 cm; beam's type: straight line • laser power: 5 mW • power supply: 2 x AAA (not included) • material: copper, aluminium; security label
High quality flashlight with Nowa Szkoła logo equipped with T6 LED diode emitting light with a power of up to 8000 lumens. The flashlight’s body is made of aviation aluminium, which is lightweight and resistant to damage. O-ring system and component compatibility protect against heavy rain, moisture. It’s non-slip surface and practical wrist strap allow it to be used outdoors. The flashlight also has a ZOOM function. Regulated focus of the beam enables to illuminate closer and further objects. This device is powered by a high-quality lithium-ion battery. The set includes a container which, if necessary, allows the battery to be replaced with batteries. • length: 13,6 - 15,8 cm • dim. 3,6 cm • extendable zoom: x1, x250, x500, x1000, x2000 • wrist strap • battery 18650, battery compartment 3 x AAA, fluorescent switch • material: aviation aluminium
- green CD7230 • colour of the beam: green • laser range: 500 m;
- red CD7231
• colour of the beam: red • laser range: 500-1 000
Diffraction grating set HG0127
Color mixing apparatus QH0055
Laser refraction tank HG0089
A set of optical devices to demonstrate the diffraction and interference of light and to obtain its spectrum. The analysis of the location of light and dark diffraction stripes makes it possible to determine the length of the wave falling onto the grating. All the diffraction gratings are made of a plastic frame (5 x 5 cm) and foil (35 x 23 cm) with openings of different shapes and spacing. They can be mounted on special stands or optical benches. The set consists of 5 gratings: • with 3 single slits (width 0,05; 0,1; 0,2 mm) • with 3 double slits of 0,05 mm (spacings 0,2; 0,3; 0,45 mm) • with single slits, 2 slits, 3 slits, 4 slits, multiple lines (30 and 60 lines/mm, circular apertures (D 0,36 mm), triangular apertures (side 0,3 mm), square apertures (side 0,2 mm), rectangular apertures (0,6 x 0,28 mm), all slits 0,06 mm wide with spacing 0,05 mm • with 3 rectangular apertures, each formed by lines intersecting at right angles, number of lines: 20, 40 and 60 respectively • with round apertures of diameters 0,2; 0,3; 0,4 mm
A special projector using 3 strong low-voltage LED lamps (red, green and blue) in special holders and sockets to ensure adjustment of the angle of incidence for each colour ray onto the white screen. • size: 22 x 17 x 16 cm • wall fasteners and manual included
The model illustrates how a beam of light gets reflected when passing through a different medium (water in an acrylic tank) and how it gets reflected. The transparent tank with water has a scale on its back wall (360°) and a movable arm with a laser activated with a switch • size: disk D 16 cm, H 25 cm; the laser requires a battery
Geometrical optics. Demonstration set QH0049 An instrument for optic experiments, e.g. refraction and reflection of light or near- and far-sightedness • size: 75 x 24 x 37 cm
education
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