Vocabulary

optical resonator; optical cavity

diffraction limit

radiation angle

optical telescope

photocathode

hot cathode

to feel uneasy; to worry (about something)

filtered water

filter bed

water filter

news website; news site

can be easily guessed

of established reputation; fully established; (universally) recognized; acknowledged; leading

precocity (esp. of a young girl); acting grown up

marvel-of-Peru (Mirabilis jalapa); four-o'clock plant

mimosa (Mimosa pudica); sensitive plant; touch-me-not

to be afraid (of); to be frightened; to be scared; to tremble in fear; to shrink in fear

rice gruel containing vegetables, fish, etc., and seasoned with miso or soy sauce

measuring rope with 'ken' (182cm) marked; measurement

jail made by placing bars across a cave entrance; cave prison

splash; plop; kerplop

cathode

Chinese sumac (Brucea javanica)

lily magnolia (Magnolia quinquepeta, Magnolia liliiflora)

contrary to expectations; or so we thought, but ...

deciduous tall tree

deciduous tall tree

Western style residences built mostly for early foreign settlers during the end of the Shogunate and the Meiji era

slab (e.g. in metal casting, smelting, etc.)

violet (any flower of genus Viola, esp. the Fuji dawn, Viola mandshurica)

cladogenesis

anagenesis

to give up; to admit defeat; to throw in the towel

neontology

concierge

any number of people

even though; despite; notwithstanding

monarch birch (Betula maximowicziana); Japanese birch

Chinese mulberry (Morus bombycis)

trident maple (Acer buergerianum)