Howard DeVoe developed a thermodynamic treatment of solutions that distinguishes chemical potentials, reference states, and activity coefficients. An ideal-mixture expression supplies a reference for representing nonideal behaviour.

An activity coefficient therefore compares a real chemical potential with a stated ideal convention. Changing the convention changes the numerical representation without changing the underlying equilibrium condition.^[ref]

Identity source: www2.chem.umd.edu/thermobook/v10-screen.pdf

A chemist credited with adapting the inspected acid-base titration experiment to microscale quantities.^[ref]

A chemist who led the chemistry department at University College London from 1887 to 1913. His isolation of argon followed John William Strutt, 3rd Baron Rayleigh's observation that atmospheric nitrogen had greater density than chemically prepared nitrogen.^[ref]

Saul Dushman investigated electron emission from metals as a function of temperature. Thermal emission connects the population of sufficiently energetic electrons with the energy required to escape a surface.

The strong temperature dependence makes the phenomenon useful in electron sources, while the surface state and work function affect quantitative interpretation.^[ref]

Physical chemistry.^[ref]

Morton B. Panish helped develop semiconductor lasers using a double heterostructure. A narrow-gap active layer between wider-gap semiconductor layers confines injected charge carriers and guides the emitted light. This combined electronic and optical confinement lowered the threshold sufficiently for continuous operation at room temperature.^[ref]

A chemist who developed semiconductor lasers at Bell Laboratories.^[ref]

Raymond Davis Jr. developed a chemical method for observing solar neutrinos. In the chlorine experiment, rare interactions converted chlorine-37 into radioactive argon-37; extraction and counting of the argon atoms made a very weak interaction observable. The unexpectedly low measured rate became a central part of the solar neutrino problem.^[ref]

A chemist.^[ref]

Karl Friedrich Bonhoeffer and Paul Harteck prepared parahydrogen at low temperatures in 1929. The work made the distinction between orthohydrogen and parahydrogen experimentally accessible and connected the physical properties of molecular hydrogen with its nuclear-spin states.^[ref]

A chemist.^[ref]

Paul Harteck and Karl Friedrich Bonhoeffer prepared parahydrogen at low temperatures in 1929. The experiment distinguished forms of molecular hydrogen associated with different nuclear-spin states, connecting a measurable sample property with the quantum description of spin isomers of hydrogen.^[ref]

A chemist.^[ref]

Hugh Stott Taylor coauthored measurements of hydrogen spin-isomer conversion at paramagnetic and diamagnetic surfaces. Ortho-para conversion changes nuclear-spin and rotational populations without changing the molecule's elemental composition.

A surface can provide a conversion pathway that is slow in the isolated gas. The resulting time-dependent composition matters when interpreting the heat capacity or cooling of hydrogen.^[ref]

A chemist.^[ref]

Chris A. Michaels coauthored analysis of stress measurements in alumina using optical fluorescence. Changes in spectral position provide information about a mechanically stressed material through a calibrated optical response.

The conversion from a line shift to stress requires a model of the spectral response and the measured geometry. It is an inference from spectroscopy rather than direct observation of a force.^[ref]

A chemist working on microscopy and spectroscopy.^[ref]

Duncan Peck MacDougall worked with William Giauque on cooling by adiabatic demagnetization. Their 1933 experiment used gadolinium sulfate octahydrate and reached about $0.25\mathrm{K}$, extending measurements below the temperatures available from conventional cryogenic liquids. The result required both a low-temperature apparatus and a magnetic field that could be reduced during an approximately adiabatic process.^[ref]

A chemist who served as deputy research director at the Explosives Research Laboratory.^[ref]

Researcher in DNA sequencing and genome mapping. Coulson coauthored the chain-termination sequencing paper with Frederick Sanger, connecting selective termination of DNA synthesis with determination of nucleotide order.^[ref]

Coauthor of experiments identifying a nucleoplasmin region that specifies migration into the cell nucleus. The study connected a defined part of a protein with selective nuclear targeting; the documented initials are retained without an unverified full-name expansion.^[ref]

Geneticist who, with Max Delbrück, used variation among bacterial cultures to investigate the origin of resistance to viruses. Their fluctuation experiment distinguished mutations arising before exposure from resistance induced only by the selecting agent.^[ref]

Researcher and coauthor of an undergraduate teaching study introducing mammalian cell culture and viability techniques. The educational work connected cellular experiments with quantitative measurements of survival.^[ref]

Biologist and coauthor of an undergraduate teaching study on mammalian cell culture and viability. The study connected hands-on cellular observations with measurement and interpretation of a biological response.^[ref]

Biologist and coauthor of an undergraduate teaching study introducing mammalian cell culture and viability measurements. The work connected students’ observations of living cells with quantitative evaluation of cellular survival.^[ref]

Martin Ryle developed aperture synthesis in radio astronomy. Signals from separated antennas provide spatial information at different baselines; combining those measurements reconstructs source structure with resolving power associated with a much larger aperture.

Earth rotation changes the projected baseline geometry, increasing the available spatial samples. Ryle's Nobel lecture explains how this principle and its instrumental realization made high-resolution radio imaging possible without filling the entire effective aperture with collecting material.^[ref]

Bruce Elsmore coauthored the account of the Cambridge One-Mile radio telescope's operation. The instrument used separated antennas and Earth rotation to sample an extended effective aperture rather than constructing a single filled reflector of that diameter.

The measured correlations constrain spatial structure through aperture synthesis. Obtaining an image requires combining the samples with their baseline geometry and a consistent calibration. The operational paper records the practical link between this mathematical reconstruction and a functioning astronomical instrument.^[ref]

Jocelyn Bell Burnell discovered the anomalous radio signal that led to the identification of pulsars. While inspecting paper recordings from the Cambridge interplanetary scintillation survey, she noticed recurring unusual structure from the same part of the sky and obtained faster recordings that resolved regularly spaced pulses.

Her account distinguishes noticing an anomaly from establishing its origin. The team checked interference, satellite and other explanations, while the source's recurrence in sidereal time tied it to the sky. Finding additional sources made a single accidental terrestrial explanation increasingly implausible.^[ref]