Unless you can concentrate for hours and hours you'll get nothing out of this at all, unlike the chemistry sets where you can try something and if it doesn't work you can try something else.
Most people can't concentrate for hours and hours on end.
Briefly, protein spots were digested using 150 ng of trypsin, peptide extraction was performed using 5 sonication cycles of 2 min each and peptides were concentrated 1 hour at 50°C in a heat block.
Young people who seem hopelessly undisciplined in school or on the job will concentrate for hour after hour on video games because there's a steady series of prizes.
It's also been used, often illegally, as a "cognitive enhancer" that can make the user more alert, focused and able to concentrate for hours on end.
(When my eight-year-old and six-year-old daughters play Minecraft, they don't seem to have any problem concentrating for hours at a time).
And, let's face it, ministers and the civil service will concentrate many hours of their time on the EU vote over the coming weeks.
Max is well qualified to discern status and relationships from a gorilla's darting glance; her ability to sit and concentrate for hours leads her into a "botanical scale" of time.
Concentrating for hours at the board is - non-chess players may be surprised to hear - physically draining.
