Tools and Instruments Used to Make Observations
- Visual
- Mirror
- Lens/Microscope/Telescope
- Prism
- Film (chemical)
- Spectrometer (optical)
- Radiometer
- Chromatograph
- X-Ray (including CT scans)
- Spectrometer (electron)
- Photo diode (includes solar panels) (CCD / CMOS)
- MRI
- Spectrometer (mass)
- Particle collider
- Auditory
- Microphone
- Touch / Physical
- Geiger counter