The length of metal tubes or rods alters when heating them up or cooling them down. If a hot tube is firmly fixed in place then great forces will act upon its holders when cooling down.
In this experiment one side of the holder consists of a rigid pin made of cast iron which is destroyed by this force when cooling down the tube.

Benefits

• Simple and clear setup
• Achievement of an elemental learning objective with little effort

In the determination of the density of solids in Experiment ME 1.5, the density was determined as the quotient of mass and volume from a weighing to determine the mass and measurement of volume by different methods. As a prerequisite for this experiment, it was assumed that the mass and volume of water are numerically identical, i.e. that the quotient of both – the density – has a value of 1 g∕cm³.

This should now be confirmed experimentally by the same method: weighing a quantity of a material and measuring its volume.

1. First the students are to determine the density of water from a volume measurement in a graduated cylinder, a weight determination and then a calculation.
2. The students should then determine the density of a table salt solution (approx. 10%) which they made themselves by the same method.

Benefits

• Real stand material for an esecially stable and safe setup
• Student-suitable experiment descriptions with reports available

In the previous experiments on determination of mass and volume (ME 1.3 and ME 1.4), the students have learned that both metal columns have the same volume but different masses. They know that the two objects consist of iron and aluminium. Obviously, the two materials differ in one property. In terms of physics, this property is called density; it is defined as the quotient of mass and volume:

ρ = m/V  in g/cm³

The students are to determine the mass of four solid objects by weighing them. The volumes of the regularly shaped objects are to be established by measuring them with the vernier calliper and then calculating, using V = l  × w  × h ; the volume of the mass piece by using the immersion method.

Benefits

• Real stand material for an esecially stable and safe setup
• Student-suitable experiment descriptions with reports available

The students should determine the volume of 3 solid bodies. In doing this they should know that the cubic meter (m³) is the unit of volume and also that the term liter (l) is very common.

1. On immersion of a solid body in a graduated cylinder, the difference of the initial and final water levels gives the volume directly. The accuracy of this method increases with increasing narrowness of the graduated cylinder, i.e. with increasing difference in the water levels.
2. Immersion of a body in an overflow vessel and weighing the mass of the overflow volume generally results in more accurate results, since it is possible to read the scales more accurately than the graduated cylinder (meniscus!).
3. For regular bodies the calculation of the volume from the length, width and height, which have been measured with a vernier caliper, is the most accurate measuring method.

Benefits

• Student-suitable experiment descriptions with reports available

1. The students should determine the mass of solid bodies with the aid of a balance.

2. The measurement of the mass of liquids can only be performed using a container. The students should determine the mass from the difference of two measurements.

Benefits

• Real stand material for an esecially stable and safe setup
• Student-suitable experiment descriptions with reports available

The students should measure length, diameter, and hole depth of various objects with a measuring tape and/or vernier caliper as possible. In doing this they should choose and use the more suitable measuring device. The results should be entered in the table as a numerical value and its unit. The symbol for the length  (l )  and the diameter  (d )  should also be used. The average value  (AV )  of each set of 3 measurements should be determined.

Benefits

• Real stand material for an esecially stable and safe setup
• Student-suitable experiment descriptions with reports available

Supplementary equipment set for TESS Basic Set Mechanics 1 (25271-88). Together with the Basic set, it is possible to performe 51 student experiments in total:

• Physical quantities and characteristics (6 experiments)
• Forces (16 experiments)
• Elementary machines (11 experiments)
• Liquids and gases (10 experiments)
• Ocillations (8 experiments)

Benefits

• The equipment set consists of all necessary components for the experiments
• Complete equipment set: simple execution of the experiments
• The equipment is stored in a rugged, stackable and compact box, allowing quick control of completeness (foam insert)
• Experimenting literature for pupils and teachers available: minimal preparation time
• Matched with international curriculum: all topics are covered
• Simple teaching and efficient learning thanks to the digital experiment descriptions included as a QR code

Equipment and Technical Data

• The equipment set consists of all the necessary components for the experiments
• Robust, stackable storage box with a foam insert fitting to the contained equipment

• Physical quantities and characteristics (5 experiments)
• Forces (10 experiments)
• Elementary machines (9 experiments)
• Liquids and gases (2 experiments)
• Oscillations (6 experiments)

Benefits

• Complete equipment set: simple execution of the experiments
• The equipment is stored in a rugged, stackable and compact box, allowing quick control of completeness (foam insert)
• Experimenting literature for pupils and teachers available: minimal preparation time
• Matched with international Curriculum: all topics are covered
• Simple teaching and efficient learning thanks to the digital experiment descriptions included as a QR code

Equipment and Technical Data

• The equipment set consists of all necessary components for the experiments
• Robust, stackable storage box with a foam insert fitting to the contained equipment

Necessary Accessories

• TESS advanced Mechanics 1 consumables for 10 groups (13450-88)

Optional Accessories

• TESS advanced Physics manual Mechanics 1 to 5 (01158-02)
• TESS advanced Physics supplementary set  Mechanics 2 (15272-88)
• TESS advanced Physics Set Linear Motion with Timer 2-1 (Dynamics) (15283-88)

Caliper gauges, micrometers and spherometers are used for the accurate measurement of lengths, thicknesses, diameters and curvatures. Measuring procedures, accuracy of measurement and reading accuracy are demonstrated.

Benefits

• Foundation of every practical sciences lab course
• Aquire the skills to measure basic mechanical variables
• Realise the limits of measuring accuracy
• Combine different measurements to determine a quantity of interest
• Determine curvatures using the spherometer

Tasks

1. Determination of the volume of tubes with the caliper gauge.
2. Determination of the thickness of wires, cubes and plates with the micrometer.
3. Determination of the thickness of plates and the radius of curvature of watch glasses with the spherometer.

Learning objectives

• Length
• Diameter
• Inside diameter thickness
• Curvature
• Vernier

For connecting the experimental motor 11614-00 to the wave machine 11211-00.

Equipment and Technical Data

Material

Dimensions

Mass