Interesting Engineering engagement report
@IntEngineering - 317K followers on X
Measured over 33 original posts from a 30-day window, last computed on September 4, 2026.
Engagement
A typical post picks up 5 interactions against 317K followers, an engagement rate of 0.002%. Measured over 33 original posts, its engagement rate beats 9% of 6,874 tracked accounts of a similar size. That is a reason to look at how the audience behaves - reply depth, saves, whether the followers are recent - rather than a conclusion about it on its own. Posts are seen about 3.2K times each, and 0.158% of those impressions turn into an interaction. That is about 1% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 1.3 post a day over the last 30 days, though only 7% of days saw any activity at all. Most posts go out around 00:00 UTC, and Friday is the busiest day of the week. Of the 33 posts sampled, 18% carry an image or video and 82% link out. The account's strongest tracked post pulled 53 interactions, about 11x its own typical post. Recurring topics include #brainteaser, #engineering, #iequiz.
Measured over 33 original posts from a 30-day window, last computed on September 4, 2026. Recurring tags: #brainteaser, #engineering, #iequiz.
Compared with accounts its own size
Interesting Engineering's engagement rate beats 9% of the tracked X accounts closest to it in follower count (6,874 accounts, accounts of similar size (decile 7 of 10)). A percentile is spread evenly by construction, so 50 really is the middle of that group and 90 really is its top tenth.
On engagement per impression rather than per follower it beats 11% of the same group. When those two numbers disagree, the gap is about how far its posts travel rather than how people react to them.
Where this sits in the catalog
At 0.002%, Interesting Engineering sits below the 10th percentile of the 66,258 accounts in this comparison. That places it in the bottom 25% band, which runs below 0.016%.
Show the percentile table
| Percentile | Engagement rate |
|---|---|
| 10th percentile | 0.002% |
| 25th percentile | 0.016% |
| 50th percentile | 0.1% |
| 75th percentile | 0.499% |
| 90th percentile | 2.09% |
| 99th percentile | 119.6% |
This ruler is the whole measured catalog, not a size-matched group: it shows where the raw rate falls across every account we can measure, all of which are large. For a like-for-like comparison, read the size-band percentile above instead. See how the bands are built
Posting timing
This account posts most often around 00:00 UTC, and Friday is its busiest day of the week. The bars below are the catalog-wide pattern, with this account's own busiest slot marked. They do not show how this account performs at each hour: we keep one aggregate per account, not one per hour, so that measurement does not exist in our data.
Show engagement by hour posted, utc as a table
| Hour (UTC) | Vs author median | Posts |
|---|---|---|
| 00:00 UTC | -1% | 89K |
| 01:00 UTC | -2% | 90K |
| 02:00 UTC | -3% | 88K |
| 03:00 UTC | -4% | 94K |
| 04:00 UTC | -5% | 76K |
| 05:00 UTC | -4% | 75K |
| 06:00 UTC | -5% | 86K |
| 07:00 UTC | -5% | 93K |
| 08:00 UTC | -4% | 108K |
| 09:00 UTC | -4% | 124K |
| 10:00 UTC | -3% | 129K |
| 11:00 UTC | -3% | 141K |
| 12:00 UTC | -3% | 154K |
| 13:00 UTC | -3% | 167K |
| 14:00 UTC | -4% | 173K |
| 15:00 UTC | -2% | 176K |
| 16:00 UTC | -3% | 171K |
| 17:00 UTC | -3% | 159K |
| 18:00 UTC | -2% | 149K |
| 19:00 UTC | -2% | 141K |
| 20:00 UTC | -1% | 131K |
| 21:00 UTC | 0% | 116K |
| 22:00 UTC | -2% | 100K |
| 23:00 UTC | -1% | 90K |
Show engagement by day of week as a table
| Day | Vs author median | Posts |
|---|---|---|
| Sunday | +5% | 393K |
| Monday | +1% | 483K |
| Tuesday | -2% | 520K |
| Wednesday | -3% | 472K |
| Thursday | -2% | 430K |
| Friday | -3% | 447K |
| Saturday | +2% | 393K |
Formats this account uses
Its own posting mix on the left, and what each of those formats does across every account we track on the right. Only formats where the effect clears our publish test appear here, so an empty row is a format we could not measure rather than one that does nothing.
| Format | This account | Catalog effect | 95% interval | Accounts behind it |
|---|---|---|---|---|
| Image or video | 18% of posts | +111% | +108% to +115% | 34K |
| Outbound link | 82% of posts | -41% | -42% to -40% | 32K |
| Typical length | - | no effect | -2% to -1% | 42K |
- 18% of this account's sampled posts carry an image or video. Across the catalog, posts with an image or video run 111% above the same accounts' other posts.
- 82% of its posts carry a link off X. Across the catalog, posts with an outbound link run 41% below the same accounts' other posts, so a large share of this account's output sits in the weakest bucket we measure.
- Its average post runs 269 characters, which falls in the 180 - 280 characters band. Across the catalog, posts of 180 to 280 characters match the same accounts' other posts almost exactly.
These are catalog-wide differences applied to this account's own posting mix, not a measurement of how each format performs for this account specifically. We keep one median per account, not one per format per account, so the second thing is not something this data can tell you.
Best tweets
- Sep 3, 202611x their median
India's first bullet train is meant to run its opening stretch, Surat to Bilimora, on 15 August 2027, and almost every layer of that line is Japanese. We break down how the J-slab track system works, the 970-tonne full span girders, the undersea tunnel under Thane Creek, the 28 seismometers and the E10 Shinkansen.
- Sep 3, 20267.4x their median
Researchers at KTH Royal Institute of Technology in Sweden and the University of Southampton have developed a flat ribbon-shaped optical fiber called HARFF (High Aspect Ratio Flat Fiber) that achieves up to 1,000 times greater pressure sensitivity than conventional cylindrical optical fibers. The flat geometry — with aspect ratios approaching 20:1 — allows the fiber to deform far more responsively to transverse forces and hydrostatic pressure than a round fiber, changing its optical properties in ways that can be precisely measured. Two air channels running through the fiber create deliberate asymmetric deformation under pressure, altering a property called birefringence that shifts the light pattern traveling through it. A separate version with a tin-based alloy filling one channel demonstrated enhanced temperature sensing, exploiting the mismatch in thermal expansion between metal and glass. The team has already drawn more than 120 meters of HARFF from a single experimental preform, demonstrating manufacturability at scale. Potential applications include structural health monitoring in composite aircraft wings, drones, bridges, batteries, and industrial equipment — anywhere early detection of strain, pressure, or temperature changes is critical. "This is not just a different looking fiber, it is a new design space for optical fiber," said KTH researcher Pawel Maniewski. The research remains at proof-of-concept stage. 📷 Pawel Maniewski / Nature Communications
- Sep 3, 20265.6x their median
Taiwan's XING Mobility has launched IMMERSIO CTP, a marine battery system in which every cell is fully submerged in a dielectric coolant instead of being cooled from the outside. The company says the design suppresses thermal runaway and stops fire spreading between cells, which lets it pack cells tighter for up to twice the energy density of a conventional marine battery. It is already running on the Porrima P111 in Taiwan and on an Austrian vessel called Smart IQ.
- Sep 4, 20263.0x their median
Sweden plans four BWRX-300 small modular reactors with 1.2 GW of capacity, targeting the first unit for the mid-2030s. https://t.co/0grRnuC2fi
- Sep 4, 20263.0x their median
A team from the Beijing Institute of Technology has developed a chip that enables real-time hyperspectral imaging analysis on a single piece of hardware, eliminating the need for bulky back-end servers and massive data transfers. Hyperspectral imaging captures the unique "spectral fingerprint" of materials across the electromagnetic spectrum, making it vital for satellite remote sensing, industrial inspection, and materials identification — but a single image can occupy hundreds of megabytes to gigabytes of data. The BIT team solved the processing bottleneck by mining data correlations to eliminate redundant calculations and redesigning the chip's arithmetic units for continuous on-chip processing. The chip follows a 2024 breakthrough by the same team that miniaturized the optical system of hyperspectral cameras to chip scale. Together, the two innovations enable fully compact, portable hyperspectral systems. The implications for satellite remote sensing are significant: instead of transmitting raw data to ground stations for processing, satellites could analyze hyperspectral data on board in real time. "When computing is chip-based, data no longer needs to be transmitted to the ground for processing — satellites can produce results in real time, right on board," said Professor Bian Liheng. The research is published in Science. 📷 Beijing Institute of Technology
- Sep 4, 20262.8x their median
Stanford researchers have developed a highly efficient method for producing hydrogen using methane pyrolysis. https://t.co/Xl0YGeJKb6
- Sep 3, 20262.8x their median
Russia's Rassvet satellite network — billed as the country's answer to Starlink — is off to a troubled start. Two launches in March and July delivered 32 satellites to low-Earth orbit, but none have reached their intended 500-mile operational altitude. At least three have suffered outright failures: one reentered the atmosphere in June, and two from the July launch appear headed for reentry without ever maneuvering. Most functioning satellites have settled around 300 miles rather than the planned 500 miles. The issues reflect Russia's chronic struggles with satellite production: the country has produced just a few dozen spacecraft per year since the Soviet Union's collapse. Russia's war in Ukraine has compounded the problem, diverting funding and personnel while Ukraine has struck the factory building the Soyuz rockets needed for Rassvet launches and sent drones toward the Plesetsk Cosmodrome launch site. The stakes are high: Russian military forces have been hungry for Rassvet access since SpaceX cut off unauthorized Russian use of Starlink terminals in February. The 12 Rassvet satellites currently in stable orbit pass over Ukraine twice daily with 90-minute communication windows — still far short of continuous coverage, which would require 16 more launches. Bureau 1440, the company behind Rassvet, aims to deploy 924 satellites by 2035. 📷 Bureau 1440
- Sep 4, 20261.8x their median
A new solar project pairs lithium-ion and zinc batteries to deliver renewable power beyond daylight hours. https://t.co/XOU4nAPdmm
- Sep 4, 20261.8x their median
CycloRP drop-in rocket fuel has passed combustion testing inside a rotating detonation rocket engine. https://t.co/OnDxjxqAwt
- Sep 4, 20261.8x their median
With no steering wheel or pedals, Tesla’s Cybercabs are betting that riders are ready to surrender control completely to autonomous technology. https://t.co/YHCWpvA0ET
Ranked by total interactions across everything we have tracked for this account, which is a longer history than the 30-day window the rates above use. The multiple compares each post to this account's own median.
Recurring topics
The most frequent hashtags in the sampled posts. They describe what this account writes about; they are not a performance signal, and the catalog-wide breakdown on the hub shows how little hashtag count moves.
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Reading these numbers
A typical post picks up 5 interactions against 317K followers, an engagement rate of 0.002%. Measured over 33 original posts, its engagement rate beats 9% of 6,874 tracked accounts of a similar size. That is a reason to look at how the audience behaves - reply depth, saves, whether the followers are recent - rather than a conclusion about it on its own. Posts are seen about 3.2K times each, and 0.158% of those impressions turn into an interaction. That is about 1% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 1.3 post a day over the last 30 days, though only 7% of days saw any activity at all. Most posts go out around 00:00 UTC, and Friday is the busiest day of the week. Of the 33 posts sampled, 18% carry an image or video and 82% link out. The account's strongest tracked post pulled 53 interactions, about 11x its own typical post. Recurring topics include #brainteaser, #engineering, #iequiz.
- What is Interesting Engineering's engagement rate on X?
- Interesting Engineering (@IntEngineering) has an engagement rate of 0.002%, based on the median interactions across 33 original posts from the last 30 days against 317,433 followers. Replies, reposts and quote-posts of other people are excluded from that sample.
- Is that a good engagement rate?
- At 0.002%, Interesting Engineering sits below the 10th percentile of the 66,258 accounts in this comparison. Those comparison accounts are all large ones, because our scanning cadence is weighted towards big accounts, so this is a ranking among peers of similar scale rather than a ranking across X.
- Does @IntEngineering have real engagement?
- Its engagement rate beats 9% of the tracked X accounts closest to it in follower count (6,874 accounts), which puts it in the bottom 10% for its size group. Ranking inside a size band matters because engagement rate falls as accounts grow, so a raw rate would mostly re-measure the follower count. It is a starting point for a look at follower quality, not a verdict on it.
- When does @IntEngineering post?
- Most posts go out around 00:00 UTC, and Friday is its busiest day, at roughly 1.33 posts per day across the measured window.