Time to Ditch the Gas and Embrace the Future of Cooking: The Summit SINC4B242W Induction Cooktop

It feels like a magic trick. You place a pot of water on a sleek, glassy surface. With the tap of a finger on a digital control, the water begins to shimmer, then churn, and within minutes, it’s at a furious boil. Yet, if you cautiously place your hand an inch away from the pot, you feel almost nothing. The air isn’t hot. The glass itself is barely warm to the touch.

How can you create such intense heat while the source remains uncannily cool? This isn’t sorcery. It’s a beautiful application of nineteenth-century physics that is quietly revolutionizing the modern kitchen, making it faster, safer, and remarkably more efficient. To understand this marvel, we need to look past the appliance and into the invisible forces at play.

For generations, our kitchens have been ruled by fire and red-hot resistance. A gas stove burns fossil fuels, releasing a plume of hot gas that heats the bottom of a pot—and everything else around it. It’s a primal, visceral way to cook, but it’s also stunningly inefficient, with studies from the Department of Energy showing that up to 60% of the energy is lost as waste heat into your kitchen. Traditional electric cooktops are better, but they still operate on a simple principle: get a metal coil incredibly hot, and then wait for that heat to slowly transfer to your cookware through conduction.

Induction cooking doesn’t transfer heat. It creates it, right where you need it.

A Field of Invisible Energy

The journey into induction begins in 1831 with Michael Faraday, a scientist who discovered a fundamental principle of our universe: a changing magnetic field can create an electric current in a nearby conductor. This is electromagnetic induction, the foundational science behind electric generators, transformers, and, as it turns out, your next-generation cooktop.

Beneath the smooth ceramic glass of an induction cooktop, like the Summit SINC4B242W, lies a tightly wound coil of copper wire. When you turn the burner on, an alternating current flows through this coil, generating a powerful, rapidly oscillating magnetic field. It’s an invisible, pulsating field of energy extending a few millimeters above the surface. If you place your hand in this field, you feel nothing, because your hand isn’t the right kind of conductor. But if you place a piece of iron in it, something extraordinary happens.

The Pan Becomes the Burner

The magnetic field penetrates the bottom of your cookware and incites the electrons within the metal to move. They begin to swirl in tiny, localized whirlpools of current, aptly named “eddy currents.”

Imagine trying to stir a thick, viscous liquid. It takes effort, and that effort generates friction and warmth. Similarly, as these eddy currents swirl through the metal of the pan, they encounter electrical resistance. This resistance creates intense friction on an atomic scale, and that friction is released as powerful, instantaneous heat.

The pan itself has become the source of the heat.

This is the crucial difference. An induction cooktop doesn’t get hot and then heat the pan. It tells the pan to get hot all by itself. For those with a deeper curiosity, a secondary effect called hysteresis loss also contributes, as the magnetic domains within the iron rapidly flip back and forth, creating even more internal friction. But the core magic lies in those eddy currents, turning your cast-iron skillet into its own heating element.

The Materials That Matter

This elegant principle dictates the two most important material choices in an induction system: the cookware you use and the surface it sits on.

First, the pan. Because this process relies on a magnetic field, the cookware must be made of a ferromagnetic material—a fancy term for metals that are strongly affected by magnets. This includes cast iron, enameled cast iron, and many types of stainless steel. It’s why cookware made of aluminum, copper, or glass won’t work; the magnetic field passes right through them with little effect. If you’re ever unsure, there’s a simple test: if a refrigerator magnet sticks firmly to the bottom of your pot, it’s ready for induction.

Second, the surface. The cooktop needs to be transparent to magnetic fields but also incredibly durable. It must withstand the high heat of the pan, potential spills, and the occasional scrape. This is where a material like glass-ceramic comes in. Used in models like the Summit, high-end EuroKera glass has a near-zero thermal expansion coefficient. This means that even when a 500°F pan is sitting on it, the glass itself doesn’t expand, allowing it to resist the immense thermal shock that would shatter a normal piece of glass. It’s a marvel of material science that is both a durable work surface and a window for the magnetic field.

The Inevitable Consequences of Good Physics

Once you understand that the heat is generated inside the pan, the much-touted benefits of induction cooking cease to be mere features and become logical, inevitable consequences.

Radical Efficiency: Because heat isn’t traveling through the air or a heating element to reach the pan, very little energy is wasted. Industry ratings place induction’s efficiency at around 85%, compared to gas’s dismal 40%. This translates directly to faster boiling times, a significantly cooler kitchen, and a lower electricity bill.

Unmatched Precision: The magnetic field is controlled electronically. When you lower the power setting, the field weakens instantly. When you raise it, it strengthens instantly. This gives the cook a level of near-instantaneous temperature control that even the most responsive gas flame can’t quite match, eliminating the thermal lag of a glowing electric coil.

A New Level of Safety: This is perhaps the most striking outcome. Since the surface is only heated by residual warmth from the pan itself, the risk of accidental burns is dramatically reduced. Spills don’t burn onto the surface, making cleanup astonishingly easy—often just a wipe with a damp cloth. This intrinsic safety is further bolstered by sensors that can detect an overflowing pot or when a pan has been removed, shutting off the power automatically.

Of course, this leap forward comes with its own set of considerations. It requires a commitment to the right kind of cookware and often needs a professional 240V installation to handle the high power output. There can also be a slight learning curve as cooks adapt to the sheer speed and responsiveness of the technology, which may partly explain the mixed initial reviews some models receive from users accustomed to the slower pace of older stoves.

But these are not so much drawbacks as they are the new rules of a much better game. Induction cooking is more than just a new appliance; it represents a fundamental shift in how we approach energy in our homes. It’s a move from brute force to elegant precision, from wasting energy to harnessing it intelligently. The sleek glass surface of a modern cooktop is a testament to the hidden science that underpins our world, reminding us that the most powerful forces are often the ones we cannot see.