A Core Sampler is a scientific instrument used to collect cylindrical samples of soil, sediment, or other materials from the ground. It works by inserting a hollow tube into the earth, which captures a core of the material as it is pulled out. This method allows researchers to analyze the composition, structure, and properties of the sampled layers, providing valuable information about the environment. Core samplers are commonly used in fields such as geology, archaeology, and environmental science. They help scientists study earth's history, assess pollution levels, and understand ecosystems. By examining the core samples, researchers can gain insights into past climates and human activities.