* Conduction: Heat can be transferred through direct contact between molecules. This is how a hot pan transfers heat to food, and it can happen in transparent materials like glass or water.

* Convection: Heat can be transferred by the movement of fluids (liquids or gases). This is how a radiator heats a room, and it can happen in transparent materials like air or water.

* Radiation: Heat can be transferred by electromagnetic waves, even through a vacuum. This is how the sun warms the earth, and it can happen in transparent materials like glass or air.

While it is true that transparent substances are often good at transmitting visible light, they don't necessarily block all forms of electromagnetic radiation. For example, glass is transparent to visible light but absorbs a significant portion of infrared radiation, which is responsible for heat transfer.

Therefore, transparency does not preclude heat transfer. All three types of heat transfer can occur in transparent substances.