The term "dust particles" refers to tiny specks or fragments of solid matter that are suspended in the air. These particles can come from various sources such as soil, sand, pollen, and even human activities like construction work or dust storms. They are usually invisible to the naked eye but can be seen when sunlight passes through them, causing a phenomenon known as "dust clouds" or "sunbeams." Dust particles can have various effects on humans and the environment, including respiratory issues, allergies, and damage to electronic equipment. In summary, dust particles are tiny solid matter that float in the air and can cause health and environmental concerns.