Why did early attempts to make incandescent electric lamps fail quickly?

Early attempts to create incandescent lamps failed quickly primarily due to the lack of two essential components: a high-quality vacuum and a durable filament material.123

Without an adequate vacuum, the filament would oxidize and burn away almost immediately when exposed to air. Early inventors struggled to achieve the necessary vacuum levels until the invention of the mercury pump in 1865 and subsequent improvements in vacuum techniques by the late 1870s.123

Furthermore, early filaments were often made of materials that could not withstand the high temperatures required for sustained incandescence without melting or breaking. It was only through extensive experimentation—such as Thomas Edison's testing of various carbonized materials and Sir Joseph Wilson Swan's work with treated fibers—that researchers identified materials capable of burning steadily for practical durations. Later, the transition to tungsten filaments and the introduction of inert gases further prevented filament degradation and bulb blackening, significantly extending the lifespan and efficiency of the lamps.312