Survival & Tactical Logic

Mission-critical math for extreme scenarios.

Bullet Drop (Simplified)

Approx Drop (inches)0.0

Water Purification

Bleach Drops (Clear)8
Bleach Drops (Cloudy)16

Emergency & Field Math

Gravity & Projectile Motion

Ballistic drop is a constant force exerted on a projectile the moment it leaves the barrel. While high-velocity rounds travel flatter, long-distance engagement requires precise compensation for gravity's pull ($9.8 \text{ m/s}^2$) over the duration of the flight.

CDC Water Ratios

In emergency scenarios, standard household bleach (without scents or thickeners) can be used to make water potable. The standard ratio is $8 \text{ drops per gallon}$ for clear water and $16$ for cloudy water. This corresponds to a $1:10,000$ concentration of $8.25\%$ sodium hypochlorite.