Biology Secondary Schools
Head: Binocular, 360° rotating and 30° inclined. Interpupillary distance from 48 to 75 mm; dioptric adjuctment on left eyepiece. Built-in 3.1 MP camera.
Eyepieces: WF 10x/18 mm, secured by screw.
'Nosepiece: Quadruple revolving nosepiece, rotation on ball bearings.
Objectives: HC - High Contrast Achromatic 4x/0.10 with anti-fungus treatment. HC - High Contrast Achromatic 10x/0.25 with anti-fungus treatment. HC - High Contrast Achromatic 40x/0.65 with anti-fungus treatment. HC - High Contrast Achromatic 100x/1.25 (Oil/Water) with anti-fungus treatment.
Specimen stage: Double layer mechanical sliding stage, 125x115 mm, 70x30 mm X-Y movement range. Vernier scale on the two axes, accuracy: 0.1mm.
Focusing: Coaxial coarse (adjustable tension) and fine focusing mechanism with limit stop to prevent the contact between objective and specimen.
Condenser: Abbe N.A. 1.25, pre-centered, adjustable height with iris diaphragm.
Illumination: X-LED² with white 3 W LED and light intensity control.
Color temperature: 6,300 K. Multi-plug 100-240Vac/6Vdc external power supply.
Color temperature: 6,300 K.
Silica cells - adipose cells - spheric cells - elongated cells - elliptical cells - stone cells - scale cells - fibre cells - concrectioned cells - cylindrical cells - polygonal cells - dotted cells - cork-like cells - druse - starch - nuclei - calcium crystals- globoidstannins - raphes - proteins - aleurons - chloroplasts - pelargonin - potato flour.
The sense organs are the instruments through which the body can receive and process the stimuli coming from outside. With the material provided in this collection teachers can enrich their lessons through the exhibition of sense organs’ models and conducting meaningful experiments, on physical and chemical stimuli. Even the students, divided into six working groups, can perform simple experiments through which:
- they acquire the knowledge that every sensation contributes to the perception of the outside world;
- they learn to distinguish the information coming from each sense;
- they learn the potentialities and limits of their sense organs and the hygienic standards for their correct use;
- they understand the importance of the connection between the sense organs and the brain in perception.
70 feasible experiments
• The skin
• Skin’s sensibility
• Touch’s stimuli
• Pressure’s stimuli
• Pain’s stimuli
• Temperature & heat
• Thermal stimuli
• Hot and cold receptors
• To see through touch
• The skin’s hygiene
Light sources and illuminated bodies
Light transports energy
The eye: a light receiver
The eye as an optical system
Eyes’ defects and their correction
Resolving power of the eye and visual acuity
The eye-brain system
The persistence of images on the retina
Temporal synthesis of colors
Spatial synthesis of colors
Sense of depth
Field of view
How to help the sight
• What’s the matter like
• The matter’s aggregation stages
• Changes of state
• The nose: the organ of smell
• How smells are detected
• How smells are identified
• How we get used to smells
• The nose’s hygiene
• The tongue and the taste buds
• How we taste different tastes
• The four main tastes
• Taste and olfaction
• Taste and sight
• Good and bad smells
• Oscillating motion
• Graphical representation of the oscillating motion
• When we hear a sound
• Why we hear sounds
• Acoustic waves
• How acoustic waves turn into sounds
• The ear: a receiver of acoustic waves
• The ear-brain system
• The limits of audibility
• The distinctive features of sound
• The sensibility of auditory apparatus
• How to reinforce the auditory sensibility
• Stereo phonics
• Echo, reverberation and boom
• Cure of auditory apparatus
35 feasible experiments
• The shells of mollusca
• Insect growth
• The anthill
• Anatomy of fish
• Habitats and living conditions
• Animal cells
• Glandular tissues
• Muscle tissues
• Starch digestion
• Fats digestion
• Protein digestion
• Osmotic pressure
• Skin appendages: fish and reptiles
• Thermal insulation: birds and mammals
• pH and organic reactions