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| Hardness |
a
property of a material: A hard material is
difficult to scratch or indent |
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| Hardwood |
wood from a tree
that loses its leaves in winter |
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| Hazard |
a potentially
dangerous activity |
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| Health
and Safety |
D&T activities must meet health and safety
requirements. This is usually done by carrying out risk assessments
and organising activities so that potential risks are controlled. |
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| Heat
Treatment |
changing the hardness
of a metal by heating and cooling in a certain way |
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| Heat
Sink |
a metal plate
used to conduct heat away from electronic components |
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| Hem |
used to stop the
edges of fabrics from fraying |
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| High
Tensile Steel |
a steel which is
very strong in tension |
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| High |
a term used to
indicate a logic 1 state in digital electronics |
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| HIP’s |
high
impact polystyrene |
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| Hydraulics |
a
system of valves and cylinders which uses oil
under pressure to provide movement |
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| Hygiene |
the principles of maintaining health through
cleanliness |
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| Hygenic |
working in a clean and therefore healthy way i.e.
food hygiene |
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