1. Why Charge to 80% for Battery Life
Lithium-ion: if kept at high charge level for extended periods, especially in warm condition, they can degrade faster over time. Why
- higher voltage, the more stress applied to battery’s chemistry
- Uneven deposition of lithium on the anode, cause permanent capacity loss
- Heat accelerate all the degradation process
2. Why Pineapple Crown can Grow
- Meristematic cell on the base of a pineapple crown
- Tissue differentiation: remove a crown and allowing it dry for a day or two
- Plant hormones
2.1. Sense to Environment?
Largely governed by hormones
- Gravitropism
- Contact with soil, from open air to more humid, dark and compact medium
- Light exposure changed the hormones distribution
3. Rose Color
Complex interplay of
- Genetic factors: pigment, modifier, suppressor
- Biochemical factors: pH level, metal ions,
- Environmental factors: temperature, light, soil