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01/09/2026

These pipe fittings make installations faster and easier. No expensive press tool required.

30/08/2026

The 1883 Krakatoa eruption produced a sound heard 4,800 km away in Rodriguez Island, near Mauritius - the furthest any sound has ever been documented in human history.

The pressure wave circled the Earth at least three times, detected on barometers worldwide.
At the source, the estimated sound level was approximately 310 dB - so loud it would have caused instant death within hundreds of kilometres.

For comparison, a jet engine at 30 metres is 150 dB.
Krakatoa was roughly 10 trillion times more powerful.

29/08/2026

World of Engineering

28/08/2026

Self adjusting wrench

27/08/2026

WiFi routers constantly broadcast signals that bounce off human bodies.
The way those signals reflect depends on body shape, gait, and movement patterns.

On August 12 2026, researchers demonstrated that standard WiFi signals can identify specific individuals with near-perfect accuracy - using only the router already in the room.

No camera. No app. No device on the person.

Every WiFi network you walk past is now potentially an identification system.
The infrastructure already exists. The question is who has access to the data.

26/08/2026

Five numbers every engineer should be able to estimate without a calculator:

1. Speed of sound in air: ~340 m/s (useful in acoustics, explosions, sonic booms)
2. Atmospheric pressure: ~100 kPa or 1 bar (baseline for all pressure engineering)
3. Density of water: 1,000 kg/m3 (anchors all fluid calculations)
4. Young's modulus of steel: ~200 GPa (baseline for all structural stiffness)
5. Thermal conductivity of copper: ~400 W/(m·K) (benchmark for all heat transfer)

Know these five and you can sanity-check almost any engineering calculation in your head.

26/08/2026

Keep watching! You may not believe what is actually machining!!

25/08/2026

How iPhone Camera Megapixels Have Evolved

📱 iPhone 2G (2007): 2 MP
📱 iPhone 3G (2008): 2 MP
📱 iPhone 3GS (2009): 3 MP
📱 iPhone 4 (2010): 5 MP
📱 iPhone 4s (2011): 8 MP
📱 iPhone 5 (2012): 8 MP
📱 iPhone 5s (2013): 8 MP
📱 iPhone 6 · 6 Plus (2014): 8 MP
📱 iPhone 6s · 6s Plus (2015): 12 MP
📱 iPhone SE 1st gen (2016): 12 MP
📱 iPhone 7 · 7 Plus (2016): 12 MP
📱 iPhone 8 · 8 Plus (2017): 12 MP
📱 iPhone X (2017): 12 MP
📱 iPhone XS · XS Max (2018): 12 MP
📱 iPhone XR (2018): 12 MP
📱 iPhone 11 · 11 Pro (2019): 12 MP
📱 iPhone SE 2nd gen (2020): 12 MP
📱 iPhone 12 · 12 mini (2020): 12 MP
📱 iPhone 13 · 13 mini (2021): 12 MP
📱 iPhone 14 · 14 Plus (2022): 12 MP
📱 iPhone 15 · 15 Pro (2023): 48 MP
📱 iPhone 16 · 16 Pro (2024): 48 MP
📱 iPhone 17 · Air · Pro (2025): 48 MP

Note: figures are for the main/wide rear sensor. The 12 MP era ran from 2015 (6s) through 2022 (14), before jumping to 48 MP starting with the iPhone 15 in 2023.

23/08/2026

The Rehbinder effect in physics is the reduction in the hardness and ductility of a material, particularly metals, by a surfactant film. The effect is named for Soviet scientist Piotr Aleksandrovich Rehbinder, who discovered the effect in 1928.

22/08/2026

19 Years of iPhone Updates, Supported iOS by Model

📱 iPhone 2G (2007): iOS 1–3
📱 iPhone 3G (2008): iOS 2–4
📱 iPhone 3GS (2009): iOS 3–6
📱 iPhone 4 (2010): iOS 4–7
📱 iPhone 4s (2011): iOS 5–9
📱 iPhone 5 (2012): iOS 6–10
📱 iPhone 5s (2013): iOS 7–12
📱 iPhone 6 · 6 Plus (2014): iOS 8–12
📱 iPhone 6s · 6s Plus (2015): iOS 9–15
📱 iPhone SE 1st gen (2016): iOS 9–15
📱 iPhone 7 · 7 Plus (2016): iOS 10–15
📱 iPhone 8 · 8 Plus (2017): iOS 11–16
📱 iPhone X (2017): iOS 11–16
📱 iPhone XS · XS Max (2018): iOS 12–18
📱 iPhone XR (2018): iOS 12–18
📱 iPhone 11 · 11 Pro (2019): iOS 13–26+
📱 iPhone SE 2nd gen (2020): iOS 13–26+
📱 iPhone 12 · 12 mini (2020): iOS 14–26+
📱 iPhone 13 · 13 mini (2021): iOS 15–26+
📱 iPhone 14 · 14 Plus (2022): iOS 16–26+
📱 iPhone 15 · 15 Pro (2023): iOS 17–26+
📱 iPhone 16 · 16 Pro (2024): iOS 18–26+
📱 iPhone 17 · Air · Pro (2025): iOS 26–...

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