date:Aug 14, 2012
Writing in the journalApplied Ergonomics, researchers Takanori Chihara and Koetsu Yamazaki said that Japanese consumers were now familiar with such bottles, but that the majority felt that a 28mm opening was too small and a 38mm opening too large.
Therefore, the researchers developed a model to assess consumer feelings (14 Japanese university students: 4 of whom were female) when they drank directly from a bottle opening, to help assess the optimum bottle opening diameter.
We know that there e