In science, “conduct” has two distinct meanings depending on context. As a verb, it means to carry out or perform a scientific activity, like conducting an experiment. As a technical term in physics, it describes how materials transfer energy, whether that’s electricity moving through a wire or heat passing through a metal pan. Both uses come up constantly in science classes and textbooks, so understanding each one matters.
Conduct as a Verb: Carrying Out Research
When scientists say they “conducted” a study or experiment, they mean they planned it, carried it out, and collected data. This is the most common everyday use of the word in science. An experiment is a structured set of actions and observations designed to test whether a specific idea (a hypothesis) is true or false. Conducting one involves several deliberate steps.
First, you identify a question and design a way to test it. This means choosing an independent variable (the thing you change) and a dependent variable (the thing you measure to see what happened). You also need to control other variables, keeping them constant so they don’t muddy your results. A control group, which receives no treatment, gives you a baseline for comparison. Participants or samples are assigned to groups randomly so the groups start out as similar as possible. Once the experiment runs, the data gets tabulated and analyzed with statistical tests to see if the relationship between your variables is real or just coincidence.
Beyond individual experiments, “conduct” applies to the broader behavior expected of scientists. Responsible conduct of research covers everything from honest data collection and proper record-keeping to fair authorship credit, transparent peer review, and ethical treatment of human and animal subjects. The flip side, scientific misconduct, is formally defined by the U.S. government as fabrication (making up data), falsification (manipulating data or results), or plagiarism (using someone else’s work without credit). These three categories, often shortened to FFP, represent the clearest violations of scientific integrity.
Conduct in Physics: How Materials Transfer Energy
The physics meaning of “conduct” is completely different. Here, it describes a material’s ability to allow energy to pass through it. A material that conducts well is called a conductor. One that blocks energy transfer is an insulator. There are two main types of conduction in physics: electrical and thermal.
Electrical Conduction
Electrical conduction is the movement of electric charge through a material. In metals and other solid conductors, this happens because some electrons aren’t tightly bound to individual atoms. Instead, they’re free to drift through the crystal structure of the material. When you apply a voltage (think of it as electrical pressure), these free electrons flow in a direction, creating an electric current.
Not all electrical conduction works the same way. In liquids, electricity travels through the movement of positive and negative ions rather than free electrons. In metals, the atomic structure creates overlapping energy bands that give electrons many available paths to move through, which is why metals conduct electricity so well. The ability of a material to conduct electricity is measured in siemens per meter (S/m). Silver is the best pure-metal electrical conductor, followed closely by copper, which is why copper wiring is standard in homes and electronics. Graphene, a single-atom-thick sheet of carbon, has extraordinarily high electrical conductivity and outperforms both.
Thermal Conduction
Thermal conduction is the transfer of heat energy through a material without the material itself moving. It works through particle collisions: faster-vibrating molecules (in the hotter region) bump into slower-vibrating neighbors (in the cooler region) and transfer some of their kinetic energy. Picture a line of billiard balls touching each other. Tap one end and the energy ripples through to the other side. That wiggle-transfer from one atom to the next is essentially how thermal conduction works.
In crystalline solids like rock or ceramics, heat also travels through lattice vibrations, where the organized structure of the material carries vibrational energy from atom to atom. Diamond is one of the best thermal conductors known, transferring heat at roughly 1,000 watts per meter per kelvin. Silver leads among pure metals at 429 W/m·K, with copper close behind at 401. This is why a silver spoon heats up fast in hot soup while a wooden one stays cool: wood is a poor thermal conductor.
Conduction vs. Convection and Radiation
Students often encounter conduction alongside two other forms of heat transfer, and mixing them up is common. The key difference is simple: conduction transfers energy through direct contact between particles, convection transfers energy by physically moving heated material from one place to another, and radiation transfers energy through electromagnetic waves with no material contact needed at all.
Think of a pot of water on a stove. The burner heats the metal pot through conduction (direct contact). Inside the pot, hot water rises and cooler water sinks, circulating heat through convection (movement of the water itself). Meanwhile, you can feel warmth on your hand held above the pot because of radiation (infrared energy traveling through the air as electromagnetic waves). Every object with a temperature above absolute zero emits some radiation.
Convection is the dominant form of heat transfer in gases and liquids, where particles can move freely. Conduction dominates in solids, where particles are locked in place and can only pass energy through vibration and collision.
What Makes a Good Conductor
Materials that conduct electricity well also tend to conduct heat well, because in metals, free electrons carry both electrical charge and thermal energy. Copper, silver, and aluminum top both lists. Insulators like rubber, glass, and wood resist both types of transfer. There are exceptions: diamond is an excellent thermal conductor but a poor electrical conductor, because it transfers heat through lattice vibrations rather than free electrons.
Semiconductors fall in between. Materials like silicon conduct under certain conditions but not others, which is what makes them useful in computer chips and solar cells. Their conductivity can be precisely controlled by adding tiny amounts of other elements, a process that forms the foundation of modern electronics.
Whether you’re reading about a team that “conducted a clinical trial” or a lesson explaining why metals “conduct heat,” the context tells you which meaning applies. If the sentence is about people doing something, conduct means to carry out. If it’s about materials and energy, conduct means to transfer or allow passage of that energy.