13.5 hours
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Edison's first successful light bulb lasted around 13.5 hours before burning out. This was a significant improvement over earlier versions that only lasted a few minutes.
Thomas Edison's first successful light bulb lasted for about 13.5 hours when he first demonstrated it. However, he and his team later improved the design to last for over 1500 hours.
Edison's main problem was finding a long-lasting, practical filament material for the light bulb. He experimented with various materials before discovering that carbonized bamboo filament could last for up to 1200 hours. This solution greatly improved the practicality and success of the light bulb.
Thomas Edison did not invent the light bulb but improved upon existing designs. He developed a carbon filament that could last longer and produce a steady light, leading to the invention of a practical and commercially viable incandescent light bulb. Edison's method involved creating a high vacuum inside the bulb to reduce the rate of oxidation of the filament, allowing it to glow for long periods.
When a light bulb gives its last glimmer, it means that the filament inside the bulb has burned out. This results in the light bulb no longer being able to produce light. When this happens, the bulb needs to be replaced with a new one.
The lifespan of a light bulb varies depending on the type of bulb and how often it is used. Typically, incandescent bulbs last around 1,000 hours, while LED bulbs can last up to 25,000 hours or more. Factors such as wattage, quality of the bulb, and usage patterns all contribute to how long a light bulb will last before burning out.