What is one surprising everyday phenomenon that quantum physics helps us understand?

 According to classical physics, the Sun shouldn't shine. The sunlight hitting your skin is the result of a massive, ongoing quantum miracle 93 million miles away.

The Sun generates energy by fusing hydrogen protons into helium. For fusion to happen, protons must smash together with enough force to overcome their natural electrostatic repulsion, known as the Coulomb barrier. Because protons are positively charged, they repel each other, much like two North poles of a magnet.

To force them together requires immense heat and pressure. The core of the Sun reaches about 15 million degrees Celsius. But from a purely classical standpoint, 15 million degrees is nowhere near hot enough to overcome the Coulomb barrier. In classical physics, protons in the Sun’s core bounce off each other without ever fusing. If the universe ran strictly on classical mechanics, the Sun would just be a dark, warm ball of compressed gas.

This is where quantum mechanics steps in.

At the quantum level, protons do not behave like solid billiard balls. Due to wave-particle duality, a proton's location is not a single fixed point. Instead, it is a smeared-out wave of probabilities. While a proton is highly likely to be found in one spot, its probability wave extends infinitely in all directions.

This means that as two protons fly toward each other, their probability waves overlap. There is an infinitesimally small chance that a proton will simply "find itself" on the other side of the repulsive barrier without having enough energy to climb over it. This phenomenon is called quantum tunneling.

The odds of any two colliding protons tunneling into each other are vanishingly small—roughly one in ten octillion. But the Sun contains an enormous number of protons. Because the individual probability is so low, the fusion process is heavily bottlenecked. This bottleneck is exactly what allows the Sun to burn its fuel slowly and steadily over billions of years, rather than detonating all at once or failing to ignite entirely.

The Sun photographed in extreme ultraviolet light by NASA's Solar Dynamics Observatory in 2010. Source: Wikimedia Commons.

Why do some everyday objects, like grains of salt or a strawberry's surface, look so amazing under a microscope?

 To the naked eye, a grain of table salt is just a jagged white speck. Under magnification, it reveals itself as a nearly perfect, interlocking cube.

Human eyes evolved to interpret the macroscopic world—to spot a predator in the brush or judge the ripeness of a fruit—completely ignoring the microscopic architecture that holds physical reality together. When a microscope bypasses that biological filter, it reveals that the most mundane objects are built from startling geometric and functional complexity.

This stark geometry occurs because salt is composed of sodium and chloride ions that naturally attract each other, locking together in a rigid, repeating 3D grid. The sharp corners and flat faces seen under a lens are the direct, scaled-up manifestation of salt's atomic lattice.

Biological objects look equally alien because magnification exposes the hidden mechanics of nature. A strawberry, for example, is not actually a true berry, but an "aggregate accessory fruit." The tiny specks on its surface, which people commonly call seeds, are actually individual dry fruits called achenes, each containing a single seed. Under a microscope, these achenes look like tough, textured armor plates embedded in a sweeping, fleshy landscape. Magnification reveals this complex reproductive strategy, stripping away the illusion of a simple, uniform red surface.

The technology used to view these objects also plays a massive role in why they look so captivating. Scanning electron microscopes (SEM) do not use visible light at all. Instead, they bounce beams of electrons off a sample's surface, creating images with incredible depth of field and stark shadowing. This process gives microscopic pollen grains, insect eyes, or woven fabrics a vivid, three-dimensional quality that traditional optical lenses cannot easily replicate.

Everyday objects look amazing under magnification because they are fundamentally engineered by physics and biology at a scale people were never meant to observe. A microscope simply grants temporary access to that hidden structural reality.

What is everyday life like in Israel?

 Every day life in Israel is like every day life in most Western First world countries.

People go to work, children go to school, taxes are too high, parking is a nightmare.

But it’s not all bad. You have beautiful beaches, incredible museums, great places to eat, and a fantastic culture.

Friday nights, many families get together for Sabbath meal (even secular) and you spend time with those you love, nourished by a rib busting meal and rib busting hugs and laughter.

There’s a lot of kids in Israel. Families, even secular ones are large. 2–3 kids are the norm and families of four aren’t unusual even amongst atheist families. Israeli culture is child friendly.

You do have a few differences. There’s security everywhere. There are soldiers all around. There are bomb shelters clearly listed. People are vigilant against terrorism. Friends can be called up for service, and unfortunately, sometimes terrorism gets through the crack and the nation mourns.

But for the most part, it’s a normal and beautiful country.