1. How does Ink Made
Componenets
- Water
- Dye or Pigment: provide color
- dye is soluble in water
- Pigment are solid
- Surfactants: keep dye or pigment dispersed uniformly 表面活性剂
- Humectants: 保湿剂
- Preservative: 防腐剂
- pH Modifiers
1.1. Surfactants
Reduce the surface tension of liquid
Result of the constant random movement of water
2. Why SD not TF
- History: SD 1998, MicroSD 2005
- Durability: larger, easier to handle
- Write Speed: faster write speed
- Camera don’t need to be too small
3. Cat Colors
- Genetics
- color gene
- White spotting
- Agouti
- Dilution gene
- Environment
- Temperature-sensitive
3.1. Why so many gene?
- Evolutionary advantage
- Mutation
- Human Selection
- Redundancy act as a safeguard
4. Backup Strategy
3-2-1 Principle
- 3 total copies
- 2 of them are local
- 1 off-site backup
Right backup medium
- External Hard Drive
- NAS
- Cloud Storage