Nadia Rahim is a RECATOOLS editorial persona focused on statistics and data literacy: what confidence intervals, averages, correlations and margins of error actually mean, and how they are misquoted. Articles under this byline trace each claim to the primary statistical literature and show the working, so readers can check a number rather than take it on trust.

About this byline

Nadia Rahim is a RECATOOLS editorial persona for statistics and data-literacy coverage. Articles are produced and reviewed under RECATOOLS editorial supervision.

Editorial responsibility for this byline rests with Jeffrey Tan (Tan Seng Fei), RECASYS, Singapore. Our Editorial Policy sets out how sources are reviewed, how AI-assisted workflows are used, and how editorial desks and personas are defined.

84
Articles
Science
Primary beat
Jul 2026
Writing since
~603 min
Total reading
All 84 Science 43 Statistics 22 Sustainability 18 AI & ML 1

Articles Showing 51–60 of 84

Conventional solar panels mounted on a tiled residential roof above a wooded hillside, illustrating a report on Tesla discontinuing its Solar Roof tile.
Sustainability

Tesla Installed About 3,000 Solar Roofs In Seven Years, And Has Now Stopped

At its peak the company was completing 21 to 32 installations a week, more than 95 per cent short of the original target. Tesla has told installers it will supply conventional panels instead, concluding the tiles were not financially viable.

23 Aug 2026 · 8 min read
A glass prism splitting a beam of white light into a visible spectrum, illustrating a report on low-loss optical waveguides fabricated on a silicon chip.
Science

Caltech Got Fibre-Grade Optical Loss Onto A Silicon Chip

Optical loss is what has kept chip-scale photonics far behind optical fibre. A Caltech group put the fibre material itself onto a chip using standard lithography, reaching quality factors above 180 million.

23 Aug 2026 · 8 min read
Rows of ground-mounted solar panels in an open field, illustrating a report on Singapore approving 900MW of solar imports from Johor.
Sustainability

Singapore Will Import 900MW Of Solar From The Johor It Competes With For Power

Two conditional approvals cover 300MW to Sembcorp and 600MW to a Ditrolic subsidiary, from solar and storage in Johor, with commercial operation around 2029. Johor is also where Malaysia's data centre build is concentrated.

22 Aug 2026 · 8 min read
Electricity transmission pylons carrying lines across open farmland under a blue sky, illustrating a report on data centres relocating toward available power.
Sustainability

Data Centres Moved 175km From The Cities, And Power Is Why

JLL finds hyperscale campuses planned for 2026-28 sit almost four times further from EMEA hub cities than those delivered since 2022. Training can follow the electricity. Interactive serving cannot.

20 Aug 2026 · 8 min read
A macro photograph of a green circuit board, rows of small black integrated circuits and resistors in sharp focus across the middle and blurring towards the edges.
Science

Why a 1,000-Qubit Computer Has Zero Usable Qubits

Physical qubits and logical qubits are different currencies. At current error rates one logical qubit costs about 1,681 physical ones — so a thousand-qubit machine holds none at all.

18 Aug 2026 · 7 min read
A pyramid of old dice stacked five rows deep against a dark green background, each row showing a different pip count from six at the base up to a single worn blue die at the top.
Science

What Is a Qubit, Really?

A qubit is not a bit that is both values at once. We built a simulator and measured what actually separates one from a coin: a Bell pair disagreed on 0 of 100,000 shots, while the same qubits left uncorrelated disagreed 49,921 times.

18 Aug 2026 · 6 min read
A white cup of cappuccino dusted with chocolate sits on a saucer on a round metal tray, a spoon and a small biscuit beside it, with a person's folded arms resting on the wooden table behind, out of focus.
Science

What Actually Decides When Caffeine Wears Off

Coffee at four, still awake at midnight? The usual answer is that a substance is gone after ten half-lives — a tidy number that turns out to depend entirely on two things it never asks you for: how much you had, and how little counts as none. Same coffee, three different answers.

15 Aug 2026 · 7 min read
Laser-cut wooden tiles engraved with element symbols and numbers lie scattered across a pale table, with a few already slotted into the empty squares of a wooden periodic-table grid at the right.
Science

Why Isn't the Periodic Table Sorted by Weight?

The periodic table is not ordered by weight. Walk our own 118-element data from hydrogen to oganesson and the weight falls, rather than rises, in seven places — four of which are the reason the table is arranged by proton count, and three of which are an artefact of one column holding two different quantities.

15 Aug 2026 · 6 min read
A tiled roof and the length of guttering along its edge, seen from below against a clear sky.
Sustainability

Annual Rainfall Will Not Size Your Tank

Singapore and Manila are within five per cent of each other on annual rainfall, and their driest months are 112 mm and 8 mm. Through the same roof, demand and tank, that turns a 10,000-litre tank meeting all of a household's demand into one meeting 69.3 per cent — and quadrupling it buys back only 2.4 points, because storage moves water through time and cannot create rain that never fell.

14 Aug 2026 · 7 min read
Electrician's tools laid out on a bench with a stripped three-core cable showing bare copper conductors.
Science

Why the Voltage-Drop Limit Is Really an Efficiency Limit

The voltage-drop limit in every wiring code reads as a performance rule. The current cancels, so the share of power burned as heat in a cable run is exactly its percentage voltage drop — an identity we verified across 216 combinations. At the three per cent limit a 100-amp circuit dissipates 720 watts into the walls while fully compliant, and on one run we measured the rule removed 354.9 watts of permanent heat.

14 Aug 2026 · 6 min read
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