We have taken the initiative to create a very complex page.
This webpage will explore various facets of scientific discoveries and inventions through a series of questions and answers.
List of Inventions and Discoveries
Given below is a list of various inventions and discoveries along with the name of the inventor and the year in which it was invented:
The above list will be verified later on.
Q. When and how was fire discovered?
- Natural ignition: Early humans likely first encountered fire through natural occurrences like lightning strikes or volcanic activity.
- Early evidence: The earliest signs of controlled fire use are found at sites linked to Homo erectus, dating back over a million years.
- Method of control: Early humans probably learnt to maintain and transport fire, with some theories suggesting they later learnt to create it through methods like striking stones or rubbing sticks together.
- Cooking: Cooking food made it easier to digest and more nutritious, as it killed parasites and bacteria.
- Protection: Fire provided a way to scare away predators and protect against the cold, especially at night.
- Social and cultural impact: Fire became a central part of social life, providing a focal point for warmth, cooking, and gatherings.
- Technological advancement: As civilisations developed, fire was essential for technologies like pottery making and metallurgy.
When and how was the wheel invented?
Q. What is a fingerprint? Who discovered the idea?
Ans. A fingerprint is an impression left by the friction ridges of a human finger. The recovery of partial fingerprints from a crime scene is an important method of forensic science. Moisture and grease on a finger result in fingerprints on surfaces such as glass or metal. Deliberate impressions of entire fingerprints can be obtained by ink or other substances transferred from the peaks of friction ridges on the skin to a smooth surface such as paper. Fingerprint records normally contain impressions from the pad on the last joint of fingers and thumbs, though fingerprint cards also typically record portions of lower joint areas of the fingers.
Human fingerprints are detailed, unique, difficult to alter, and durable over the life of an individual, making them suitable as long-term markers of human identity. They may be employed by police or other authorities to identify individuals who wish to conceal their identity or to identify people who are incapacitated or dead and thus unable to identify themselves, as in the aftermath of a natural disaster.
Their use as evidence has been challenged by academics, judges, and the media. There are no uniform standards for point-counting methods, and academics have argued that the error rate in matching fingerprints has not been adequately studied and that fingerprint evidence has no secure statistical foundation. Research has been conducted into whether experts can objectively focus on feature information in fingerprints without being misled by extraneous information, such as context.
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