Amber
amberWhen passing through a lock, an amber light means “approach the lock under full control."
Amber
Amber
amber
amber
Amber
Amber
amber
Amber
When passing through a Lock an amber light means approchthe lock under full controll
The condenser adjusts the amount of light passing through the specimen.
You can split white light into a spectrum of its component wavelengths by passing it through a prism, not a prison.