HEAT SOURCES
Alcohol Lamps
An alcohol lamp is a small jar with a special lid that holds a round cotton wick. Most are provided with another lid that fits over the wick to extinguish it and prevent evaporation of the alcohol fuel when not in use. Alcohol inside the jar is drawn up the wick by capillary action and evaporates when it reaches the air. Alcohol lamps are normally used when low heat is needed for projects such as woodworking, lab experiments or heating something for a science project. It is use to burn or heat an experiment in the laboratory.
An alcohol lamp is a small jar with a special lid that holds a round cotton wick. Most are provided with another lid that fits over the wick to extinguish it and prevent evaporation of the alcohol fuel when not in use. Alcohol inside the jar is drawn up the wick by capillary action and evaporates when it reaches the air. Alcohol lamps are normally used when low heat is needed for projects such as woodworking, lab experiments or heating something for a science project. It is use to burn or heat an experiment in the laboratory.
Bunsen Burners
A Bunsen burner provides concentrated and adjustable heat for experiments. A tube connects the burner to the laboratory gas supply. When the Bunsen burner is lit, the flame can be adjusted using the air hole. Closing the air hole produces an easily visible, luminous flame is produced that is not good for heating. It should be opened when the Bunsen burner is used to heat chemicals.
A Bunsen burner provides concentrated and adjustable heat for experiments. A tube connects the burner to the laboratory gas supply. When the Bunsen burner is lit, the flame can be adjusted using the air hole. Closing the air hole produces an easily visible, luminous flame is produced that is not good for heating. It should be opened when the Bunsen burner is used to heat chemicals.
Hot Plate
Hot plates are generally used to heat laboratory samples when the desired temperature is 100°C or higher and are preferred because they are the safest heating device since they produce no open flame, and rarely produce sparking. An important part of a hot plate is the heating top, which is the flat surface on which the sample to be stirred is placed. Most modern heating tops are made out of ceramic, aluminum, or enamel.
Hot plates are generally used to heat laboratory samples when the desired temperature is 100°C or higher and are preferred because they are the safest heating device since they produce no open flame, and rarely produce sparking. An important part of a hot plate is the heating top, which is the flat surface on which the sample to be stirred is placed. Most modern heating tops are made out of ceramic, aluminum, or enamel.