Orbisica
العربية

Discoveries

Findings and breakthroughs that expanded human knowledge.

History of Vaccination

Vaccination is defined as the administration of antigenic material to stimulate an individual's immune system to develop adaptive immunity to a pathogen . This process confers protection by engaging the body's own defenses, rather than through passive transfer of antibodies. Vaccines themselves are biological preparations that provide active acquired immunity . They typically contain weakened or inactivated parts of a particular organism, which prime the immune system without causing the full disease .

25/25 claims verified 14 min read·

Discovery of Radioactivity

Radioactivity is the spontaneous emission of particles or radiation from the nucleus of an unstable atom. This phenomenon, unknown before the final years of the nineteenth century, fundamentally altered the course of physics and chemistry. It is a nuclear process, distinct from chemical reactions, and arises in unstable nuclei that have an excess of protons or neutrons. The strong nuclear force holds the nucleus together but is overcome in radioactive decay.

25/25 claims verified 13 min read·

The Birth of Radio Astronomy

Radio astronomy is the study of celestial objects at radio frequencies, a discipline that examines the radio emissions reaching Earth from beyond the atmosphere. Because radio telescopes can detect objects invisible to optical telescopes, they open a window onto phenomena that remain hidden at visible wavelengths. The field emerged as a new branch of astronomy after World War II, when wartime radar research supplied both the technology and the expertise on which its first instruments depended. Many of the astronomers who drove this expansion had previously served as radar operators, applying…

25/25 claims verified 14 min read·

Discovery of Penicillin

Penicillin is an antibiotic derived from the Penicillium mould, and its discovery is widely regarded as one of the most significant events in the history of medicine. The substance was first identified in 1928 by Alexander Fleming, a bacteriologist working at St Mary's Hospital in London. That chance observation would ultimately transform the treatment of bacterial infections and open an entirely new chapter in medical practice. The introduction of penicillin is generally understood to have marked the beginning of the antibiotic era.

25/25 claims verified 12 min read·