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Some precautions for Safety in the Physics Laboratory:

Never work in the lab unless a teacher is present and aware of what you are doing.

Prepare for the lab activity or experiment by reading it over first. Ask questions about anything that is unclear to you. Note any cautions that are stated.

Dress appropriately for a laboratory. Avoid wearing bulky or loosefitting clothes or dangling jewelry. Pin or tie back long hair, and roll up loose sleeves.

Keep the work area free of any books and materials not needed for what you are working on.

Wear safety goggles when working with flames, heated liquids, or glassware.

Never throw anything in the laboratory.

Use the apparatus only as instructed in the manual or by your teacher. If you wish to try an alternate procedure, obtain your teacher's approval first.

If a thermometer breaks, inform your teacher immediately. Do not touch either the Mercury or the glass with your bare skin.

Do not force glass tubing or thermometer into dry rubber stopper. The hole and the glass should both be lubricated with glycerin (glycerol) or soapy water, and the glass should be gripped through a paper towel to protect the hands.

Do not touch anything that may be hot, including burners, hot plates, rings, beakers, electric immersion heaters, and electric bulbs. If you must pick up something that is hot, use a damp paper towel, a pot holder, or some other appropriate holder.

When working with electric circuits, be sure that the current is turned off before making adjustments in the circuit.

If you are connecting a voltmeter or ammeter to a circuit, have your teacher approve the connections before you turn the current on.

Do not connect the terminals of a dry cell or battery to each other with a wire. Such a wire can become dangerously hot.

Report any injuries, accidents, or breakages to your teacher immediately. Also report anything that you suspect may be malfunctioning.

Work quietly so that you can hear any announcements concerning cautions and safety.

Know the locations of fire extinguishers, fire blankets, and the nearest exit.

When you have finished your work, check that the water and gas are turned off and that electric circuits are disconnected. Return all materials and apparatus to the places designated by your teacher. Follow your teacher's directions for disposal of any waste materials. Clean the work area.

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