Across
- 1. /the black center of the eye
- 4. /highest point of wave
- 5. /repetition of wave, measured in hertz
- 7. /measures power in electrical systems
- 9. /thin elongated objects or cylindrical structure
- 10. /illuminating objects, electromagnetic radiation
- 12. /innermost layer of the eye, crucial for vision
- 13. /invisible radiation beyond red light, detected as heat
- 16. /takes in another substance or light
- 18. /electromagnetic radiation beyond violet light
- 19. /refracts light and creates rainbows like effects
Down
- 2. /transparent optical element that refracts light
- 3. /the darkness crated by shelter
- 4. /a lens that curves inwards
- 6. /colored substance that reflects certain wavelengths of light
- 8. /long narrow container or low point
- 11. /allows light to pass through
- 14. /the unit of energy in the SI measuring heat and work
- 15. /central, darkest part of a shadow where light is completely blocked
- 17. /sending signals through mediums, such as air