By Calculating the posibility that it would not burn while it gives light for the flow of electricity to the filament wire and protecting it with a glass the has a gas to protect from oxidation without ever going wrong.
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Thomas Edison's scientific method involved rigorous experimentation and iteration. He tested thousands of materials before finding the suitable filament for the light bulb. His method of trial and error, along with his dedication to persistent experimentation, ultimately led to the invention 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.
The scientific method.
The first step in the scientific method is observation. This is where a scientist notes and gathers information about a phenomenon they want to study.
After making a prediction, the next step in the scientific method is to test the prediction through experimentation or observation to see if it is accurate and can be supported by evidence.
A testable prediction in the scientific method is called a hypothesis. This is a proposed explanation or educated guess about an observed phenomenon that can be tested through experiments or observations.