a unit of illumination, equivalent to 0.0929 foot-candle and equal to the illumination produced by luminous flux of one lumen falling perpendicularly on a surface one meter square. Symbol: lx. Also called meter-candle.
The fact is that there are only a limited number of days each cycle when a woman can get pregnant - the five days before she ovulates and the 24 hours after she ovulates. These six days are the only fertile days of a woman's cycle and they take into account the lifespan of sperm (5 days) and the lifespan of the ovum (24 hours).
8 How long after your period can you get pregnant? Dr. Lydia Collins Dr. Collins. Depends on cycle: From the first day of the period, the average day of ovulation is 14 days after. This is because the average cycle length of women is 28 days from the start of one to the next.