He once removed the filament from the lightbulb of a camera's flash, without breaking the bulb glass.
2.
Hyacinths force easily in water-filled hyacinth bulb glasses and in pots with the bulb tip above the soil surface.
3.
Some of these coatings are not as durable as the bulbs themselves; with prolonged heat-cool cycles, the coating may flake off the bulb glass, or its colour may fade.
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