If you split something wide open then the inside is revealed even more.

pin point accuracy

squeeze (n.) 1610s, "act of squeezing," from squeeze (v.). Main squeeze "most important person" is attested from 1896; meaning "one's sweetheart, lover" is attested by 1980. Slang expression to put the squeeze on (someone or something) "exert influence on" is from 1711.

A lover?

Charge separation means the positive and the negative charge are not present together but are separated from each other in a molecule. This usually arises when the bonding electrons between two atoms are not shared equally and are present closer to one atom than the other.1 Dec 2012

There are only two types of charge, one called positive and the other called negative. Like charges repel, whereas unlike charges attract. The force between charges decreases with distance.

If you describe a dispute or a legal case as open-and-shut, you mean that is easily decided or solved because the facts are very clear. It's an open-and-shut case.

if you squeeze or stretch a piezoelectric crystal, you deform the structure, pushing some of the atoms closer together or further apart, upsetting the balance of positive and negative, and causing net electrical charges to appear.

early 13c., pinchen, "to pluck (an eyebrow);" mid-14c. "compress between the finger and thumb or some device, squeeze between two hard, opposing bodies," from Old North French *pinchier "to pinch, squeeze, nip; steal" (Old French pincier, Modern French pincer), a word of uncertain origin, possibly from Vulgar Latin *punctiare "to pierce," which might be a blend of Latin punctum "point" + *piccare "to pierce."

force a way through; penetrate.

"they were seeking to pierce the anti-ballistic-missile defences"

make (a hole) with a sharp instrument.

"I had to pierce another hole in my belt"

make an opening in or bore a tunnel through.

"the dividing wall is pierced by arches"

verb: pierce; 3rd person present: pierces; past tense: pierced; past participle: pierced; gerund or present participle: piercing

1.
(of a sharp pointed object) go into or through (something).

"a splinter had pierced the skin"

make a hole in
penetrate
puncture
punch
perforate
riddle
stab
prick
probe
gore
spike
stick
impale
transfix
bore (through)
drill (through)
lance
tap

pierce someone's heart — affect someone keenly or deeply.

"pure love had pierced her heart

Middle English: from Old French percer, based on Latin pertus- ‘bored through’, from the verb pertundere, from per ‘through’ + tundere ‘thrust’.

[i′lek‚trän ′tən·əl·iŋ] (quantum mechanics) The passage of electrons through a potential barrier which they would not be able to cross according to classical mechanics, such as a thin insulating barrier between two superconductors.

Tunneling is a quantum mechanical effect. A tunneling current occurs when electrons move through a barrier that they classically shouldn't be able to move through. In classical terms, if you don't have enough energy to move “over” a barrier, you won't. ... Tunneling is an effect of the wavelike nature.

A square wave is a non-sinusoidal periodic waveform in which the amplitude alternates at a steady frequency between fixed minimum and maximum values, with the same duration at minimum and maximum. In an ideal square wave, the transitions between minimum and maximum are instantaneous.

Phase-shift masks are photomasks that take advantage of the interference generated by phase differences to improve image resolution in photolithography. There exist alternating and attenuated phase shift masks. A phase-shift mask relies on the fact that light passing through a transparent media will undergo a phase change as a function of its optical thickness.

An attenuated vaccine is a vaccine created by reducing the virulence of a pathogen, but still keeping it viable.