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Science
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3 questions about Science
Question 1Which scientist is credited with developing the first vaccine against smallpox?See the answer +
The answer
Edward Jenner
Edward Jenner, an 18th-century English physician, is recognized for developing the first vaccine against smallpox, thus marking the beginning of immunology. His observation that people who had contracted cowpox were then protected against human smallpox led him to create the vaccine. This…
Read the full explanationQuestion 2Which cosmic phenomenon is theorized to occur when the Universe stops its expansion and begins to contract?See the answer +
The answer
The Big Crunch
The Big Crunch is a fascinating cosmological theory that predicts a possible final fate for the Universe: if the density of the Universe is high enough, gravitational force would overcome cosmic expansion, leading the Universe into a phase of contraction. This ultimate…
Read the full explanationQuestion 3What differentiates a supermassive black hole from a stellar black hole?See the answer +
The answer
Their size
Supermassive and stellar black holes are primarily distinguished by their immense size. While a stellar black hole is born from the collapse of a single star and generally has a mass up to a few tens of times that of the Sun,…
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Questions to explore
- Which advancement in theoretical physics posits the existence of additional dimensions beyond the three spatial dimensions?See the answer
- Which discovery allowed humanity to understand that light behaves both as a wave and as a particle?See the answer
- What is the “photoelectric effect,” the phenomenon for which Einstein won the Nobel Prize in Physics in 1921?See the answer
- Which scientist is famous for introducing the idea that matter can be converted into energy, summarized by the equation E=mc²?See the answer
- What is “cavitation,” a phenomenon often observed in rapidly moving fluids?See the answer
- Which concept in physics describes the phenomenon by which an object accelerating in a fluid experiences a force opposite to its direction?See the answer
- What advancement in the field of transplantation has significantly increased the survival rate of patients receiving transplanted organs?See the answer
- Which genetic modification technique, developed in the 21st century, allows for gene editing with unprecedented precision?See the answer
- Which non-invasive diagnostic tool uses magnetic fields and radio waves to create images of the inside of the body?See the answer