Use these tubes to show spectral lines of pure substances. These are glass tubes approximately 10.25″ (260 mm) long, central capillary portion approximately 3.5″ (90 mm) to 4″ (100 mm) long, with electrodes sealed at both ends and connected to lead wires protected by metal caps. The tubes offer an exciting illustration of spectral lines.
• The tube needs an induction coil 2″ (50 mm) spark, or a suitable transformer like our power supply Item #3376-00D
• Length of capillary portion can be varied as required
• These cannot be used as lamps
• For intermittent use
• Spectrum – Light Blue-Green

Item 3376-10

$11.56

• Video Available

LENSES, ACRYLIC BI CONCAVE

Item 3352-02

$2.18

Use these tubes to show spectral lines of pure substances. These are glass tubes approximately 10.25″ (260 mm) long, central capillary portion approximately 3.5″ (90 mm) to 4″ (100 mm) long, with electrodes sealed at both ends and connected to lead wires protected by metal caps. The tubes offer an exciting illustration of spectral lines.
• The tube needs an induction coil 2″ (50 mm) spark, or a suitable transformer like our power supply Item #3376-00D
• Length of capillary portion can be varied as required
• These cannot be used as lamps
• For intermittent use
• Spectrum – Yellow-Orange

Item 3376-11

$11.56

• Video Available

Glass Semicircular Block 3-1/2″x1/2″

Item 3353-01

$3.68

Use these tubes to show spectral lines of pure substances. These are glass tubes approximately 10.25″ (260 mm) long, central capillary portion approximately 3.5″ (90 mm) to 4″ (100 mm) long, with electrodes sealed at both ends and connected to lead wires protected by metal caps. The tubes offer an exciting illustration of spectral lines.
• The tube needs an induction coil 2″ (50 mm) spark, or a suitable transformer like our power supply Item #3376-00D
• Length of capillary portion can be varied as required
• These cannot be used as lamps
• For intermittent use
• Spectrum – Lavender

Item 3376-12

$11.56

• Video Available

MIRRORS, SPHERICAL CONCAVE 50X10

Item 3360-21

$1.45

MIRRORS, SPHERICAL CONCAVE 50X15

Item 3360-22

$1.45

MIRRORS, SPHERICAL CONCAVE 50X20

Item 3360-23

$1.45

This spherically concave mirror is made of optically true glass with protected silver coating. Use it in basic experiments and demonstrations in optics.
• 10″ (250 mm) focal length
• 2″ (50 mm) Dia.

Item 3360-24

$1.40

MIRRORS, SPHERICAL CONCAVE 50X100

Item 3360-27

$1.38

MIRRORS, SPHERICAL CONVEX 50X10

Item 3362-21

$1.33

MIRRORS, SPHERICAL CONVEX 50X15

Item 3362-22

$1.33

MIRRORS, SPHERICAL CONVEX 50X20

Item 3362-23

$1.33

This spherical convex mirror is made of optically true glass with a protected silver coating. Use it for basic experiments in optics. It is a quick and easy way to teach students about the behavior of convex mirrors.
• 10″ (250 mm) focal length
• 2″ (50 mm) Dia.

Item 3362-24

$1.27

MIRRORS, SPHERICAL CONVEX 50X100

Item 3362-27

$1.33