Albert Einstein in 10 Questions

Albert Einstein is one of the most recognisable figures in the history of science. Even those far removed from physics can picture the wild hair, thoughtful gaze, and the famous equation, E = mc². Yet behind the familiar image lies a story of curiosity, persistence, and ideas that reshaped how the universe is understood. In the early 20th century, Einstein introduced theories that would revolutionise physics, redefining concepts such as space, time, energy, and gravity. His work laid the foundations for much of modern science, while his independent spirit and imaginative thinking helped turn a theoretical physicist into a global icon.

So, who was the man behind the groundbreaking discoveries? From early life and career milestones to the ideas that changed science forever, here are ten questions that help unpack the life and legacy of Einstein.

Albert Einstein was born on 14 March 1879 in Ulm, in the German state of Württemberg, into a middle-class family. His father, Hermann Einstein, was an engineer and businessman, while his mother, Pauline Koch, encouraged his early interests in music and learning. Within a year of his birth the family moved to Munich, where Einstein spent most of his childhood.

Despite later becoming the symbol of scientific genius, Einstein’s early development did not always appear promising. His parents reportedly worried about him because he learned to speak later than many children, which led some to wonder whether he might have an intellectual difficulty.

Yet signs of curiosity emerged early. At around five years old, Einstein was given a magnetic compass by his father, and the invisible force guiding the needle fascinated him. The experience sparked a lifelong interest in the hidden laws governing nature.

By his early teens, that curiosity had turned into remarkable ability. Einstein taught himself algebra and geometry at around age 12, mastering material well beyond his school lessons. By sixteen he had even written a short scientific essay exploring the behaviour of magnetic fields.

Still, school itself was not always easy. Einstein excelled in mathematics and physics but disliked rigid teaching methods and struggled with subjects that relied on memorisation. One frustrated teacher reportedly told him he would never amount to much. Nevertheless, Einstein persevered and completed his secondary education in 1896, ready to pursue the science that already captivated him.

Far from it. Although Einstein would become one of the most influential scientists in history, his early adult life hardly resembled the smooth rise of a prodigy. After graduating from the Zurich Polytechnic in 1900, Einstein struggled to find an academic job. For nearly two years he applied for teaching positions but was repeatedly rejected, even asking his father to write letters on his behalf.

During this uncertain period he worked as a private tutor before finally securing a more stable position in 1902 as a technical expert at the Swiss Patent Office in Bern, examining applications for mechanical inventions. The job may not have sounded glamorous, yet it gave Einstein something invaluable: time to think.

Outside work, he enjoyed a wide range of hobbies. Einstein had played the violin since the age of five, and music remained a lifelong passion that he often shared with friends through informal chamber performances.

He also loved sailing, though by most accounts he was not particularly good at it. Friends joked that he frequently ran his boat aground, partly because he became so absorbed in his thoughts while on the water.

Einstein’s social circle was just as eclectic as his interests. As his fame grew, it eventually included artists and entertainers – among them the silent film legend Charlie Chaplin, whom he met during a visit to California in the early 1930s. For someone often portrayed as the ultimate absent-minded scientist, Einstein clearly knew how to enjoy life beyond the blackboard.

Before Einstein, most scientists saw the universe through the lens of Isaac Newton. In that picture, space was fixed and absolute, and time ticked at the same steady rate everywhere. The universe was essentially a stable stage on which events played out.

Einstein began questioning that idea as a teenager. Years later he described imagining himself chasing a beam of light through space. If he could catch up with it, he wondered, would the light wave appear frozen in front of him? According to the equations of physicist James Clerk Maxwell, that should be impossible: light must always travel at the same speed.

This puzzle led Einstein to a startling insight. If the speed of light never changes, then space and time themselves must adjust.

From that idea came remarkable consequences. Time can slow down for fast-moving objects, and distances can appear shorter at high speeds. The famous equation E = mc² also follows from this thinking, revealing that mass and energy are closely linked.

In effect, Einstein showed that space and time are not rigid backdrops. Instead they form a dynamic system – spacetime – that can stretch, bend, and respond to motion.

When people talk about Einstein’s “theory of relativity,” they are actually referring to two connected ideas: special relativity, published in 1905, and general relativity, introduced a decade later. Together, they changed how scientists understand motion, gravity, and the structure of the universe.

Special relativity deals with objects moving at extremely high speeds. Einstein showed that the laws of physics are the same for observers moving at constant speeds and that the speed of light is always the same, no matter how fast the observer is travelling.

Put another way, if light always moves at the same speed, space and time themselves must adjust. At very high speeds, clocks run more slowly and distances can appear shorter. From this theory also comes the famous equation E = mc², revealing that mass and energy are closely linked and can be converted into one another.

Einstein later expanded the idea with general relativity, which reimagined gravity. Instead of an invisible force pulling objects together, gravity arises because mass bends the fabric of space and time.

A useful comparison is a heavy ball placed on a stretched sheet: it creates a dip that draws nearby objects towards it. In the same way, stars and planets curve spacetime around them, shaping how objects move through the universe.

In 1905, Einstein was not yet a famous scientist. He was a young patent clerk in Bern, Switzerland, spending his days reviewing applications for electrical devices. Yet in his spare time he was quietly working on ideas that would soon transform physics. That year, he submitted a series of papers to the journal Annalen der Physik that would later become known as his “Miracle Year” publications.

In total, Einstein published four groundbreaking papers in a single year. The first explained the photoelectric effect, proposing that light behaves not only as a wave but also as tiny packets of energy called quanta, an idea that helped launch quantum physics and later earned him the Nobel Prize.

A second paper analysed Brownian motion, the jittery movement of tiny particles in liquid. Einstein showed that this motion could be explained by collisions with invisible molecules, providing convincing evidence that atoms truly exist.

His third paper introduced special relativity, radically reshaping ideas about space and time. Soon after, a short follow-up paper revealed the relationship between mass and energy, expressed in the now-famous equation E = mc².

It’s rare for even one scientific paper to reshape a field. Einstein produced four in a single year, an extraordinary burst of insight that marked the beginning of his rise to international fame.

Yes, but not for relativity, the theory most people associate with his name. Instead, Einstein received the 1921 Nobel Prize in Physics for explaining the photoelectric effect, a discovery that helped launch modern quantum physics.

In his 1905 paper, Einstein proposed that light does not behave purely as a wave, as scientists once believed. Instead, it can also act like a stream of tiny packets of energy, later called photons. When these packets strike a metal surface, they can knock electrons loose, producing an electric current – the phenomenon known as the photoelectric effect.

Einstein’s insight solved a long-standing puzzle in physics and helped establish the idea that light can behave both as a wave and a particle, a cornerstone of quantum theory.

Although relativity did not earn him the Nobel Prize, Einstein’s ideas went on to inspire many other breakthroughs. His prediction that accelerating masses should create gravitational waves was confirmed more than a century later, leading to the 2017 Nobel Prize in Physics. His work also helped inspire research into Bose-Einstein condensates, a strange new state of matter observed at extremely low temperatures and recognised with the 2001 Nobel Prize.

From black holes to modern space telescopes, scientists continue to test and confirm Einstein’s ideas, a reminder that his influence extends far beyond a single prize.

Yes, and the file they kept on him was enormous. By the time Einstein died in 1955, the FBI had compiled a dossier of more than 1,400 pages tracking his activities, political views, and associations.

Einstein had already become one of the world’s most famous scientists when political turmoil reshaped his life. In 1933, Adolf Hitler and the Nazis came to power in Germany, where Einstein, who was Jewish, was quickly labelled an enemy of the state. While travelling abroad at the time, he chose not to return. Instead, he emigrated to the United States, eventually settling in Princeton, New Jersey.

But life in America brought a different kind of scrutiny. Einstein was outspoken about social and political issues, speaking publicly against racism, nationalism, and nuclear weapons. His pacifist beliefs and sympathy for certain socialist ideas attracted the attention of FBI director J. Edgar Hoover, who suspected that the scientist might be linked to radical political movements.

As a result, the bureau monitored Einstein for decades, collecting reports, newspaper clippings, and letters from concerned citizens. Although the investigations never produced evidence that he was involved in any subversive activities, the file continued to grow.

Einstein did not directly work on the atomic bomb, but he played a role in its early development. In 1939, he signed a letter to US President Franklin D. Roosevelt, warning that Nazi Germany might attempt to build nuclear weapons. The letter encouraged the US to begin atomic research. This effort eventually became the Manhattan Project, which developed the first nuclear bombs.

Einstein later expressed regret about the role his warning played in nuclear weapons development, becoming a strong advocate for nuclear disarmament.

Einstein died on 18 April 1955 in Princeton, New Jersey, at the age of 76 after suffering a ruptured abdominal aortic aneurysm. True to his wishes, his body was cremated and his ashes scattered at an undisclosed location.

However, something unexpected happened during the autopsy. The pathologist on duty, Dr Thomas Stoltz Harvey, removed Einstein’s brain shortly after his death. Harvey hoped that studying the organ might reveal biological clues behind the physicist’s remarkable intelligence. The decision was controversial because Einstein and his family had not given prior permission for the brain to be preserved.

After the removal became known, Einstein’s son eventually allowed the research to continue on the condition that any findings would be published in scientific journals. Harvey carefully preserved the brain and later divided it into hundreds of small sections, distributing samples to researchers who wanted to study its structure.

The strange story did not end there. For decades, much of Einstein’s brain remained in Harvey’s possession, stored in jars while scientists searched for physical traits that might explain genius. Although studies later examined its structure, researchers have never found a simple biological explanation for Einstein’s extraordinary mind.

More than a century after his most famous discoveries, Einstein’s ideas still shape modern science and technology. What began as abstract theories about space, time, and energy has become the foundation for entire fields of research, and even everyday tools. Today, his discoveries underpin countless modern technologies and scientific fields, including:

• GPS satellite systems
• Nuclear energy
• Cosmology and the study of the universe
• Black hole research
• Gravitational wave astronomy

In 2015, scientists detected gravitational waves for the first time – exactly as Einstein had predicted a century earlier.

From patent clerk to global icon, Einstein’s story is a reminder that revolutionary ideas often begin with simple questions. By imagining what it might feel like to ride alongside a beam of light, Einstein opened the door to a new understanding of the universe. And more than a century after his “miracle year,” the universe continues to reveal the astonishing truths hidden within his ideas.