152
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RADIOACTIVITY / ATOMIC PHYSICS
Diffusion cloud chamber Radioactive source
Continuously operating diffusion cloud chamber for the Americium-241 3,7 kBq. For use with diffusion cloud
observation of a particle tracks. Diameter 120 mm, chamber no. 5120.00.
height 90 mm. With the aid of approx. 50 g dry ice and
5105.05 Radioactive source
1-2 ml alcohol, the traces of fog can be observed for
5105.10 Holder for 5105.05
about 30 min. The chamber requires no high-voltage
sources; it is equipped with a 12 V lamp.
Without radio active preparation.
5105.05
5120.00 Diffusion cloud chamber
Snowpack - apparatus
0730.80
for making dry ice
5120.00
Connect the Snowpack to a
siphon type CO2 cylinder and
proceed in accordance with
the instructions. An injection
time of 1 min. is sufficient to
produce a diameter 50 x 22
mm pellet. The dry ice pellet
may e.g. be used to operate
the Diffusion Cloud Chamber.
0730.80 Snowpack
- apparatus for
making dry ice
Irradiated seeds
Sorting tray 35 x 27 cm
Simple plant experiments for A plastic tray which can be used for a planting box for
demonstration of the effect of radiation on plants seedlings.
With this experiment the effects of increasing radiation
0520.30 Sorting tray 35 x 27 cm
doses on plants can be observed. It will also be found
that radiation is more harmful to some plants than to
others. Five different types of irradiated seeds can be
supplied: barley, wheat, rapeseed, flax and yellow
7791.10
mustard. The seeds are supplied in sets with 6 different
radiation dosages: 0 kilorad, 10 kilorad, 40 kilorad, 80
kilorad and 160 kilorad with about 40 seeds for each
dosage. The gamma irradiated seeds are not radioacti-
ve, so the experiments with them are completely safe.
The seeds are sown in short rows in a planting box e.g.
no. 0520.30. The material is placed in a bright window
sill to germinate. The plants should begin to sprout
within 7 to 12 days depending upon the seed type and
the temperature. The height of the plant corresponding
to each radiation dose can be measured and compared.
The effect of different radiation doses on plant growth
can also be studied. Supplied with instructions.
7791.10 6 x 40 Barley seeds
7791.11 6 x 40 Wheat seeds
7791.11
7791.12 6 x 40 Rape seeds
7791.13 6 x 40 Flax seeds
7791.14 6 x 40 Yellow mustard seeds
7791.20 Set with all 5 seed types
This experiment shows:
A) The effect of increasing radiation doses on plants.
B) That radiation is more harmful to some plants than to
others.
®
Science Equipment for Education Physics
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