Second Year Laboratory


It is essential that you behave safely in the laboratory at all times.

It is essential that you follow these safety rules:

No running or jumping (the only exception is if you wish to jump for joy at a particularly exciting part of an experiment).

Smoking, drinking and eating are forbidden in the laboratory. The only exception is drinking from or around the water fountain near the entrance door.

Shoes must be worn on the feet for safety reasons.

Some experiments use voltages exceeding 40 V. You must always use the shrouded cables provided for these experiments.

Radioactive sources must be signed for and returned at the end of each laboratory class.

Care must be exercised when unplugging electrical apparatus from the mains power sockets. The socket should be switched off and you must keep your fingers away from the pins on the plug.

Students with any sort of conductive implant e.g. a pacemaker or a hip replacement, should avoid very strong magnetic fields.

Safety Precautions For Liquid Nitrogen

Treat liquid nitrogen with the same care as boiling water, - its extremely low temperature can easily produce damage to the skin similar to a burn.

Liquid nitrogen is always used in a Dewar (or Thermos-type) flask, for the obvious reason of conserving the liquid for as long as possible. Consequently only the outer surface of the flask is at room temperature, and this is the only part of the flask that should be touched by unprotected hands. Skin touching a surface at liquid nitrogen temperature will stick to that surface, and so, not only will the skin be 'burnt', but also torn as the limb is withdrawn from the surface.

The gloves provided must always be worn when transferring or pouring liquid nitrogen.

As the eyes are especially vulnerable a safety visor, provided for this purpose, must always be worn when handling liquid nitrogen.

Safety Precautions for Flashing Lights

A very small percentage of people may experience a seizure or convulsion when exposed to certain visual images, including flashing lights. Even people with no history of seizures or epilepsy can have an undiagnosed condition that might cause a 'photosensitive epileptic seizure' while observing flashing lights.

Such a seizure can be accompanied by a wide variety of symptoms that could include: light-headedness, altered vision, eye or face twitching, jerking or shaking of arms and legs, disorientation, confusion or momentary loss of awareness. Seizures can also cause a loss of consciousness or convlusions that can lead to injury from falling down or striking nearby objects. If you suspect that yourself or another student if experiencing any of the above symptoms,


You will be asked to sign a form that confirms that you have read the above rules and agree to abide by them and behave safely whilst in the second year laboratory.


Further Information


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