how far a laser pointer can go
The distance a laser pointer can travel depends on several factors, including:
- Power: The power of the laser pointer, measured in milliwatts (mW). More powerful lasers can travel farther.
- Beam divergence: The angle at which the laser beam spreads out. A smaller beam divergence means the laser can travel farther without spreading out too much.
- Atmospheric conditions: The air’s clarity, humidity, and temperature can affect the laser’s range. Clear, dry air allows the laser to travel farther.
- Obstacles: The presence of obstacles, such as buildings, trees, or hills, can block or attenuate the laser beam.
Typical ranges for laser pointers are:
- Low-power laser pointers (1-5 mW): up to 100-500 meters (330-1,640 feet)
- Medium-power laser pointers (5-50 mW): up to 1-5 kilometers (0.6-3.1 miles)
- High-power laser pointers (50-500 mW): up to 5-20 kilometers (3.1-12.4 miles)
- Extremely high-power laser pointers (above 500 mW): up to 20-50 kilometers (12.4-31 miles) or more
Keep in mind that these estimates are rough and can vary depending on the specific laser pointer and environmental conditions.
It’s also important to note that laser pointers can be hazardous to aviation and human vision, so it’s essential to use them responsibly and follow local regulations. Never shine a laser pointer at aircraft, people, or animals.
