![Is an unfocused 4W laser do dangerous at 5 meters? | Page 2 | Laser Pointer Forums - Discuss Laser Pointers | High Power Lasers Is an unfocused 4W laser do dangerous at 5 meters? | Page 2 | Laser Pointer Forums - Discuss Laser Pointers | High Power Lasers](http://www.lightfest.org.uk/wp-content/uploads/sites/51/2014/12/Incoherent-and-coherent-light.jpg)
Is an unfocused 4W laser do dangerous at 5 meters? | Page 2 | Laser Pointer Forums - Discuss Laser Pointers | High Power Lasers
![coherence - Why incoherent source of waves have to be passed though a single slit for double slit interference pattern to occur? - Physics Stack Exchange coherence - Why incoherent source of waves have to be passed though a single slit for double slit interference pattern to occur? - Physics Stack Exchange](https://i.stack.imgur.com/qfB33.png)
coherence - Why incoherent source of waves have to be passed though a single slit for double slit interference pattern to occur? - Physics Stack Exchange
![Visualizing the Concept of Spatial Coherence - The Double Slit Experiment with Incoherent and Coherent Light | Simulating Physics Visualizing the Concept of Spatial Coherence - The Double Slit Experiment with Incoherent and Coherent Light | Simulating Physics](https://rafael-fuente.github.io/images/incoherent-double-slit-simulations/simulation-incoherent-picoseconds.jpg)
Visualizing the Concept of Spatial Coherence - The Double Slit Experiment with Incoherent and Coherent Light | Simulating Physics
![Coherent Light, Incoherent Light, Monochromatic Light, - Coherent Light - 380x380 PNG Download - PNGkit Coherent Light, Incoherent Light, Monochromatic Light, - Coherent Light - 380x380 PNG Download - PNGkit](https://www.pngkit.com/png/detail/401-4014959_coherent-light-incoherent-light-monochromatic-light-coherent-light.png)