Diurnal tide and tidal current at different times and the eulerian residual current are calculated,also the cotidal line,the iso-amplitude curves and the distribution of tidal current ellip...
Science could prolong the night, but only for a little, and those high hopes of neutralizing the earth's diurnal revolution had passed, together with hopes that were possibly higher.
Even the eyes of mammals that were diurnal—active only during the day—had certain characteristics of nocturnal eyes, like those of creatures who are active at night.
" The light-dark cycle would be that primary cue, and that's what's kind of surprising that an animal can be nocturnal under some conditions and diurnal in the other."
One 2012 study analyzed the eye shape of 266 species of mammals and found little difference in the eyes regardless of whether the animals were nocturnal or diurnal.
Even if researchers can't say if either Repenomamus was nocturnal or diurnal, they still don't fit the picture of meek mammals hiding away from the hungry dinos.
Walls noted that many diurnal mammals had large corneas, fewer types of photoreceptor cells to see colors, and a tapetum lucidum—a reflective surface that increases light absorption by the retina.
At which point, the souls are led to the plain of Lethe to drink the waters of forgetfulness, which is why we have no recollection of the afterlife in our diurnal existence.