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Physics 7th grade

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Electricity and electric current B9

21 feasible experiments
Topics
• Electricity
• Triboelectricity
• Protons and electrons
• Electric actions
• Electrostatic induction
• Double electric pendulum
• Contact electrization
• The leaf electroscope
• Electrical state of a body
• Determination of the electrical state of a body
• Even the air can be electrified
• The biological effects of air ionization
• Lightning
• Electricity in motion
• Batteries
• Volta battery
• Electric potential difference
• Voltmeter
• Electrical circuit
• Conductors and insulators
• Intensity of the electric current
• Ammeter
• Electrical resistance
• Electric energy
• Lamps in series and lamps in parallel
• The domestic electrical system
Price excl. tax: €187.14
Price inc. tax: €224.56
Quantity:

DC power supply unit 5011

Input tension 230 V; outputs in continuous current with jerky adjustable tension: 3 - 4,5 - 6 - 7,5 - 9 - 12 V.
Max current 2 A.
Price excl. tax: €53.69
Price inc. tax: €64.42
Quantity:

Modular set to study electric circuits 5332

This modular set enables the performance of many experiments on electrical conduction, reducing to a minimum, the use of connecting cables. In this way, besides simplifying the operating production of circuits, their layouts are highlighted. We suggest our power supply code 5011, not supplied with this apparatus. Assembly table dimensions: 45x33 cm

14 feasible experiments 

Topics:

• Bulb with switch

• Protection fuse

• Bulb Series with single point

• Parallel Bulbs with single point

• Parallel Bulbs with 2-way switch

• Bulbs with dual control with 2-way switch

• Bulbs with dual control with relay

• Use of the voltmeter and the ammeter

• First ohm’s law

• Second ohm’s law

• The rheostat

• The potentiometer

• Series circuits

• Parallel circuits

Price excl. tax: €685.14
Price inc. tax: €822.17
Quantity:

Tuning fork 3003

Oscillation frequency: 440 Hz. It is supplied with resonance box and hammer.
Price excl. tax: €19.43
Price inc. tax: €23.32
Quantity:

Set of 8 tuning forks 3020

The items are made of chrome steel, with different length and section of 5.5x8.5 mm. Hz frequencies : 261.6 - 293.6 - 329.6 - 349.6 - 392 - 440 - 493.9 - 523.2. With case and hammer. Suitable for demonstrating the tones-frequencies relationship, and for tuning music instruments.
Price excl. tax: €38.35
Price inc. tax: €46.02
Quantity:

Sound B8

27 feasible experiments
Topics
• Hearing
• When do we hear a sound?
• The oscillations
• The period of oscillations
• The frequency of oscillations
• The graphic representation of the oscillations
• Why we hear sounds
• Acoustic waves
• How acoustic waves are transformed into sounds
• The ear: a receiver of acoustic waves
• The ear-brain system
• The limits of audibility
• The sensitivity of the hearing system
• How to reinforce auditory sensitivity
• The distinctive characters of the sounds
• Stereophony
• The reflection of acoustic waves
• Interference of acoustic waves
• The beats
• The sonometer
• Resonance
• Stringed musical instruments
• Musical instruments working with air
• Take care of the hearing system
Price excl. tax: €214.75
Price inc. tax: €257.70
Quantity:

Ear and hearing, B17

16 feasible experiments
Topics:
• Oscillatory motion
• Graphic representation of oscillatory motion
• When we hear a sound
• Why we hear sounds
• Acoustic waves
• How acoustic waves are transformed into sounds
• Ear: a receiver of acoustic waves
• The ear - brain system
• Audibility limits
• Distinctive characters of the sounds
• Sensitivity of the auditory system
• How to reinforce auditory sensitivity
• Stereophony
• Echo and reverberation
• How to take care of the hearing system
Price excl. tax: €123.73
Price inc. tax: €148.48
Quantity:

Colours and vision Kit 4015

Equipment supplied:
1 Set of 3 primary colour filters;
1 Set of 3 secondary colour filters;
1 Chart with colour triangle;
1 Chart with 4 stereoscopic figures
1 Pair of stereoscopic spectacles
Price excl. tax: €22.50
Price inc. tax: €27.00
Quantity:

Projector of optical rays and color mixer, 4129

This fundamental item for the study of light phenomena, is composed of a rectangular case (175x90x55 mm) containing a lamp with vertical filament (12V - 36W) placed in the upper part. A system of cylindrical converging lenses enables you to obtain converging, diverging or parallel light beams. On the front of the case there are three windows with clasps, whose internal part are mirror-like and endowed with guides for inserting diaphragms and other colour filters. All equipment is contained in a wooden case. Power-unit included.
Topics:
• Law of reflection
• Refraction in diverging lenses
• Reflection in mirrors
• Refraction in prisms
• Laws of refraction
• Dispersion of white light
• Total reflection
• Filters
• Refraction in a plate
• Primary and secondary colours
• Refraction in converging lenses
• Colour composition
Price excl. tax: €204.01
Price inc. tax: €244.81
Quantity:

Hand Newton’s disk, 4048

If the cranck handle is spined, the disk looks like it’s white because of the light recombination.
Disk diameter: 17 cm.
Price excl. tax: €28.12
Price inc. tax: €33.75
Quantity:
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