Index of keywords
beginning Y

The book of science

Tom Sharp

Jump to:

Chronological index
Elements:
Index by scientist
Eponymous milestones
Index by science
Index by keyword

The main entries in this index are titles of poems that link to milestones in the chronological index. When one of these is green, it is followed by a line from the poem, which links to the poem itself. Multiple lines of the same poem appear in order of appearance.

This index does not serve as an index for scientists, sciences, or elements.

For scientists, go to the index by scientist.
For sciences, go to the index by sciences.
For elements, go to the element indexes or periodic table.

Alphabetical index of keywords beginning Y

0-9, A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z

Y — ya, ye, yi, yo, yt, yu

Yale
- Vitamin discoveries
- and Lafayette Mendel with Thomas Burr Osborne at Yale
yang
- Geomancy
- exerting, and its yang, receiving,
- Yin & yang
- is either yin or yang.
- Yin and yang
- Yin dances with yang.
yard
- Liquefaction of water
- yards, roofs, trees waving in a gentle breeze,
- Only bones
- but if the same broken bone were dug up in my yard by a dog
- Rossby wave
- rise inches or yards
- Stupidity
- litter its yards and poison its cats
yarn
- Gordian Knot
- To untangle a mess of yarn,
year
- 99% human
- What are five to twelve million years
- A.K.A.
- lived for over a million years, and has been
- Apparitions
- “A dark and rainy year.
- Archaeopteryx
- 170 million years ago,
- Astronomy
- Hipparchus measured the year,
- than anyone else for three thousand years.
- Atomic number 92
- eight years before.
- with a half-life of 703.8 million years
- Atomic number 93
- for storing this waste for thousands of years.
- Atomic number 94
- of 80.8 million years.
- Bacillus anthracis
- that survive in soil for many years
- The balance spring
- fifteen years after Hooke.
- Barium
- Thirty-four years later, Humphry Davy
- Beryllium
- Thirty years later,
- Calcium
- goes way back, before over seven thousand years BCE.
- The Canon of Medicine
- for over six hundred years.
- Catastrophist geology
- were laid down and deformed over a few thousand years
- who claimed that the world was only six thousand years old.
- argued for years
- Celestial stems and terrestrial branches
- The years have sixty names
- and contains six years of the rat
- Chimpanzees and humans
- During her years observing chimpanzees in the wild,
- Chinese calendar
- Each year begins with the month
- a year has 13 new moons.
- Each year is divided into 24 solar terms.
- Most years have 12 months; leap years have 13.
- Most years have between 353 and 355 days;
- leap years have between 383 and 385.
- Chlorine
- Thirty-six years later, Humphry Davy
- Codiscoveries
- Carl Wilhelm Scheele discovered oxygen three years before Priestley,
- Conjunctions
- by hundreds of years.
- Did he
- three years later Thomson discovered electrons
- Difference engine
- Fifty-six years later, Joseph Marie Jacquard
- Discovery and proof
- to conjectures that may take years to reach
- Discovery of Neptune
- For years it had been speeding up
- Drifting from a time
- The Egyptian calendar didn’t have a leap year,
- so it drifted by a day every four years. The rising of Sirius,
- was on the second day after four years, and so on,
- and known inaccuracies, for example that a period of 1460 years
- doesn’t account for minor shifts of Sirius relative to the solar year,
- Egyptian calendar
- to define the liturgical year.
- Because the solar year has about 365 days,
- The electrical researches of the Honourable Henry Cavendish
- Forty years before the invention of the galvanometer,
- Embryogenesis
- a half billion years
- Eradication
- still occurred in the world each year.
- Over one hundred years
- Escapements
- The gravity escapement, developed over a hundred years
- Evolution
- Last year, pagers were more necessary
- This year, everyone has a cell phone and internet access
- Next year, some will wonder what life was like
- Foundations
- however, it took another hundred and fifty years
- Germanium
- Fifteen years earlier, Dmitri Mendeleev,
- The great adventure
- during Eleven Years of Travel
- Halley’s comet
- and predicted its return after 76 years.
- Hebrew calendar
- Gradually, over hundreds of years,
- to determine when to add an extra month to the year,
- from the first year of the world,
- Heritage
- five thousand years ago in Germany.
- From five thousand years ago, Egyptians
- Homo neanderthalensis
- Seven years after Schaaffhausen announced the bones
- for a hundred thousand years
- Hooke’s interests
- He was Curator of Experiments for forty years
- Humboldt’s voyage
- On a trip that started in 1799 and lasted five years
- Ideal gases
- Only years later can we distinguish
- Imhotep, the myth
- Twelve hundred years after Imhotep died,
- and for the two thousand years,
- The impermanence of war
- It took many years to see
- Inaccuracies
- every two or three years the year gets an extra lunar month
- (that is, for seven of every nineteen years comprising the Metonic cycle);
- however, this year still falls short one day
- every 231 years, so what the heck?
- In our day
- a few hundred years, read New Latin.
- Intercalaries
- (every three or four years) at the end of February.
- Interesting aspects
- such as counting years from Anno Mundi 1,
- having each year start on Rosh Hashanah,
- near the solstice, the time of year
- counting a year by months and not by days,
- It doesn’t exist
- like almost a thousand years.
- James Clerk Maxwell
- Nine years after he died in 1879 at 48,
- and, nearly one-hundred years after he died,
- Julian calendar
- in the year 46 BCE.
- which made each year
- The Julian calendar year
- and every four years
- Keeling curve
- but also year-on-year increases
- from the last eight hundred thousand years.
- Lead poisoning
- The odd thing is for many, many years,
- Loading coil
- Michael Pupin in the same year
- Local variations
- The first days of the year and months,
- Lost science
- It took fifty years for George Hadley’s paper
- forty-six years after Henry Cavendish discovered it,
- another fifty-two years after Ohm.
- years before others showed it could be done.
- Maya calendar
- The Mayan year had 18 months of 20 k'ins,
- The Wayeb' was the dangerous, unlucky part of the year
- Medical research
- for more than thirteen hundred years.
- Meson
- It took thirteen years
- Metabolism
- and for thirty years
- Metric system
- A hundred years went by
- Metronome
- The next year,
- Minerals
- many years to unravel
- No energy expended
- all these years, have I been lazy, blind,
- Observational astronomy
- in the fall of 1608. Within a year, Galileo Galilei
- Ode to allicin
- each New Year in Afghanistan—
- Only bones
- I have learned working for a big company for thirty years.
- Origin of species
- Devoting years to the field or lab
- Other electrical telegraphs
- Two years later, David Alter
- Pattern recognition
- who went home, got drunk, and died of old age years later.
- Pendulum clock
- had already invented it fifteen years before.
- Philosophical language
- and their food for a year would fit into Noah’s ark.
- A place in the universe
- At least forty-six billion light years away
- Planetary orbits
- Ten years later
- Platinum
- It took many years for platinum
- Antonio de Ulloa spent ten years in the region
- Platinum pyrometer
- and Guyton had worked with platinum for years.
- Plutonium
- eighty-seven years and two-hundred seventy days—
- The principles
- for hundreds of years.
- Prior art
- The next year, 1841, Frederick de Moleyns
- but the next year he died of tuberculosis.
- Provinance
- even a hundred years later.
- Radon
- Later that year, Robert Bowie Owens
- Replica
- Inside the complex, every two years for eternity,
- Replication in a dish
- from chicken hearts alive for 34 years
- Rossby wave
- in months or years.
- Science in his day
- his herbal medicines were in use for three hundred years.
- Solid-state effects
- five years before I was born
- Speed of light
- varied by the time of year,
- Speleothems
- During the Permian, 250 million years ago,
- After the middle of the Cenozoic, during the last 33 million years,
- Fifteen to twenty million years ago,
- Spiral galaxies
- but it took another 79 years
- Spontaneous generation
- by ninety-five years.
- The story of kites
- was a thousand years later.
- Stratigraphy
- Niels Stensen, known as Nicolas Steno, took a year to study
- Sunspot cycle
- seventeen slow years
- cycle of ten years.
- Tantalum
- The year after Charles Hatchett discovered niobium,
- Terminal transferase
- before we reach a hundred years
- Theories of action
- For many years, erroneous theories
- Transit of Venus
- over the next two hundred years.
- Triboelectric effect
- we sadly use the year of his death.
- Vanadium
- would take another fifty years.
- Verifiable
- of the moons of Jupiter within the year.
- Vibrio cholerae
- Thirty years later, working in Egypt and India
- Ytterbium
- Years later, Georges Urbain isolated
- Yttrium
- Forty-nine years later, in 1843,
yearning
- Stupidity
- against yearning for what we cannot have
yeast
- Artificial mashups
- evolve in special yeast cells
- Synthesis of urea
- showed that enzymes from yeast
yellow
- Apparitions
- appears as a series of yellow fuzzballs
- Atomic number 24
- Its popular red and yellow
- Chrome yellow school buses.
- Atomic number 36
- produce yellow, green, a blur of white
- stained blue, green, yellow,
- Atomic number 59
- a yellow hue.
- Atomic number 60
- Filters out yellow light.
- Atomic number 67
- Holmium provides a yellow or red color
- Holmium chloride is yellow in natural light
- Bismuth
- yellow pigment.
- The Canon of Medicine
- and the four humors (blood, phlegm, yellow bile,
- Chinese calendar
- Lord Huangdi, the Yellow Emperor, decreed
- Colors
- some a yellow and no other,
- Erbium
- in his oxide of yttrium—one yellow
- and the yellow oxide erbia,
- Experimental medicine
- but also remove yellow bile. If we test it
- Gems
- and aquamarine chrysolite, pale yellow,
- Heliodor, greenish-yellow,
- and golden beryl, golden yellow,
- A genius of his time
- but that the “yellow and black races” diverged and were inferior,
- Helium
- and found a bright yellow line
- detected the yellow spectral line of helium
- but his spectroscope showed a bright yellow line
- Humorism
- yellow bile, blood, phlegm, and black bile,
- Iridium and osmium
- to obtain a yellow solution with a very pungent smell.
- Named after Ytterby
- a yellow oxide erbia,
- Nils Johan Berlin couldn’t find the yellow oxide
- Marc Delafontaine found the yellow oxide
- Nobility
- compared to my yellow skin
- Peculiarities of the strata
- and, in some places, Yellow Ochre and Glass Sand
- Pigment
- Yellow Ochre, 23,000-13,000 BCE
- using black, burnt umber, red and yellow ochres.
- Pigmented
- yellow for happiness,
- Quasi-stellar objects
- The petal of a yellow flower
- Stuff with color
- Red and yellow, black and white,
- Stuff with colors
- is yellow.
- Terbium
- and the other yellow.
- and the yellow oxide erbia,
- but Nils Johan Berlin couldn’t find the yellow oxide,
- Tradition
- to an imbalance of blood, yellow bile,
- Uranium
- Martin Heinrich Klaproth precipitated a yellow compound
- He heated his yellow oxide and got a black powder,
yes
- Retroviral replication
- But yes they get
yesterday
- Knee-jerk reactions
- Yes, it rained yesterday;
yew
- Enquiry into Plants
- beech, yew, hop-hornbeam, lime, maple, ash, cornelian cherry,
yield
- Uses
- measuring machine use and crop yields
yin
- Geomancy
- The earth around us has its yin,
- Yin & yang
- is either yin or yang.
- Yin and yang
- Yin dances with yang.
Yi Xing
- Computing devices
- by Liang Lingzan and Yi Xing in the 720s
- and phases of the moon
yoga
- Think positive!
- Jogging, yoga, meditation,
York
- Atomic number 26
- made of iron from the Cape York meteorite.
Young
- Birefringence
- before Thomas Young explained
- Deciphering hieroglyphics
- until 1814 when Thomas Young
- Young knew that the Ptolemaic dynasty would have Greek names
- Young did a decent phonetic transcription of the names,
- Wave optics
- Thomas Young proposed
yourself
- Factory prototype
- do not make little humans like yourself
- Thinking
- “Examine yourself;
youth
- Electrum
- were in search of happiness and eternal youth
- Lords of the night
- She is youth, beauty, and passion.
- Remnants and traces
- but forgot to ask for eternal youth
ytterbia
- Lutetium
- the mineral ytterbia into two oxides—
- Named after Ytterby
- Johan Gadolin named the new oxide ytterbia,
- and ytterbia.
- Nilson separated Marignac’s ytterbia
- into ytterbia
- Georges Urbain separated Nilson’s ytterbia
- Scandium
- from the ytterbia of Marignac.
- Ytterbium
- split terbia into terbia and (he called it) ytterbia,
- Yttrium
- He named it ytterbia.
- found that Gadolin’s ytterbia (now called yttria)
ytterbite
- Named after Ytterby
- Carl Axel Arrhenius named his mineral ytterbite,
- Yttrium
- He named it ytterbite.
- worked on the ytterbite from Arrhenius. In 1794
ytterbium
- Atomic number 70
- A little ytterbium-169
- A little ytterbium improves
- A little ytterbium helps make
- Exceedingly little
- Ytterbium occurs naturally as
- Ytterbium
- the oxide of ytterbium,
- from ytterbium oxide two elements—
- neoytterbia, later named ytterbium,
Ytterby
- Erbium
- of the village where it was found, Ytterby,
- Named after Ytterby
- after Ytterby, in Sweden.
- Terbium
- of the village where it was found, Ytterby,
- Ytterbium
- the fourth element named after Ytterby, Sweden.
yttria
- Atomic number 39
- Yttria helps give the red color
- Atomic number 68
- Erbium-doped yttrium aluminium garnet lasers
- Erbium
- in his oxide of yttrium—one yellow
- Having named yttrium from the first syllable
- Named after Ytterby
- shortened the name to yttria.
- Carl Gustav Mosander separated yttria into three oxides.
- a colorless oxide retaining the name yttria,
- Yttrium
- found that Gadolin’s ytterbia (now called yttria)
- yttria, erbia, and terbia.
yttrium
- Atomic number 21
- yttrium-scandium-gallium
- Atomic number 39
- Yttrium compounds are catalysts
- Yttrium metal is used on electrodes
- Yttrium compounds are used
- Yttrium barium copper oxide
- Atomic number 56
- paralstonite, mackelveyite-(Y) where the Y stands for yttrium,
- Atomic number 64
- The gadolinium yttrium garnet has various uses in optical equipment.
- History of electrolysis
- to isolate yttrium, beryllium, and titanium.
- Rare earths
- Seventeen rare earth elements—yttrium,
- Samarium
- which contains yttrium and cerium, uranium and iron,
- Terbium
- in his oxide of yttrium—one rosy
- Having named yttrium from the first syllable
- Tweedledum and Tweedledee
- but not for your friend yttrium;
- Yttrium
Yukawa
- Meson
- Hideki Yukawa predicted
Yuki
- Binary number
- Yuki and Pamean numbers
Yuzhang
- Rocket
- to propel the “flying fire” on Yuzhang,