Inventors and Scientific Discoveries

Cytokinins were first isolated by Miller and his co-workers in the 1950s from coconut milk and other plant tissues. They discovered these cell division-promoting hormones through their research on plant growth substances.

Burrhus Frederic Skinner was an American psychologist, behaviorist, author, inventor, and social philosopher. He has given the concept of operant conditioning.

Thomas Alva Edison invented the first practical electric light bulb in 1879. While there were earlier versions by other inventors like Joseph Swan, Edison's design was the first commercially successful incandescent lamp with a long-lasting carbon filament. The other options are incorrect: Dr. C.V. Raman discovered the Raman effect, Alfred Nobel founded the Nobel Prize and invented dynamite, and Alexander Fleming discovered penicillin.

Albert Einstein explained the photoelectric effect in 1905, showing that light behaves as discrete packets of energy (quanta/photons) rather than continuous waves. This groundbreaking work earned him the Nobel Prize in Physics in 1921. While Heinrich Hertz first observed the phenomenon in 1887, Einstein provided the theoretical explanation that revolutionized quantum physics. Faraday, Dalton, and Rutherford made important contributions to other areas of physics but not the photoelectric effect.

Theodore Maiman built and demonstrated the first working laser in 1960 at Hughes Research Laboratories. While Charles Townes (misspelled as 'S towns') developed the maser (microwave amplifier), and others contributed to laser theory, Maiman created the first functional device using a ruby crystal.

Alfred Nobel invented dynamite in 1867 as a safer alternative to nitroglycerin. He established the Nobel Prize using his fortune from this and other inventions. C.V. Raman worked on light scattering, Edison on the light bulb and phonograph, and Fleming discovered penicillin.

Dr. Jonas Salk developed the first successful polio vaccine in 1955. Note the name is misspelled as 'Johns E.Salk' and Louis Pasteur (misspelled as 'Paster') developed pasteurization and rabies vaccine. Edward Jenner created the smallpox vaccine.

Electromagnetic induction was discovered by Faraday.

Robert Adler co-invented the TV remote control with Eugene Polley at Zenith Electronics in 1956. Polley created the first wireless remote (Flash-Matic), and Adler developed the ultrasonic Zenith Space Command. 'Zenith Emmay' and 'Eammy' appear to be garbled entries, while Robert Brown is an unrelated historical figure.

Robert Hooke was the first person to observe cell structure under a simple magnifying device invented by him in 1665.

Wilhelm Roentgen discovered X-rays in 1895 while experimenting with cathode ray tubes. His discovery revolutionized medical diagnostics and earned him the first Nobel Prize in Physics in 1901.

Alexander Graham Bell invented the telephone in 1876 and was granted the first US patent for it. While there were other inventors working on similar devices, Bell is credited as the primary inventor of the telephone. Alexander Fleming discovered penicillin, Thomas Edison invented many things (including the light bulb and phonograph), and Marconi is associated with radio telegraphy.

Charles Darwin is credited with proposing the theory of evolution by natural selection in his work 'On the Origin of Species' (1859). While other scientists contributed to evolutionary ideas, Darwin's work provided the mechanism of natural selection.

R.H. Whittaker proposed the five-kingdom classification system in 1969, which includes Monera, Protista, Fungi, Plantae, and Animalia. This system was based on cell structure, mode of nutrition, and body organization.