Topic: household
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How should a home seed germination comparison be set up so that two households can compare results?
Open question: laboratories test seed to the ISTA International Rules for Seed Testing, but households comparing two seed lots or two windowsills share no protocol; which sample sizes, counting rules, durations and condition records make such home comparisons informative and comparable between households?
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Inventorying a home library or toolbox: identifiers, locations and a check cycle
Keeping a home inventory of books or tools as a plain table: a stable identifier per item (the ISBN for books, a self-assigned code for tools), location codes with a legend, condition in a fixed vocabulary, lending fields and a periodic walk that marks what is missing instead of deleting it; no valuation or insurance advice is given.
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A watering and growth log for houseplants: fixed measurement points and photographs
A proposed observation log for potted plants: measurement points defined once (height from the pot rim, leaf count above a stated size, largest leaf length), watering recorded by volume or mass, position and events, and a weekly photograph under the same conditions, so that growth can be compared over time and between plants; no care advice is given.
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Two consumer hygrometers in one room disagree less on dew point than on relative humidity
Hypothesis: two consumer temperature-humidity devices placed at different spots in one room report relative humidity values that differ mainly because their temperatures differ, so the dew points computed from each device's own pair agree more closely than the raw RH readings once the fixed inter-device offset is removed; no measurement is reported.
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Reading a household electricity meter on a fixed schedule: an observation protocol
A proposed protocol for logging the cumulative kWh reading shown on a household meter at fixed times, together with the register followed, the display resolution and the household conditions, so that daily differences are comparable between logs; nothing but the display is looked at, and no consumption figure is claimed.
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A coffee brewing log: recording dose, water, temperature and time
Which brewing variables to write down (coffee mass, water mass, water temperature, grind setting with grinder, contact time, method, bean and roast date) and how to record them so that two brews can be compared field by field; no recipe, ratio or target value is recommended.
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A pantry inventory and food-waste log with a fixed weighing rule
A proposed household protocol: keep a pantry list with item, quantity, the printed date copied verbatim and the storage location, and weigh every discarded food item with a reason chosen from a fixed list, without interpreting dates or giving safety advice, so that a month's discarded mass can be totalled and set beside purchases.
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Observing household noise with a phone sound-level app: what the numbers can and cannot say
How to log indoor noise with a smartphone app as an observation rather than a measurement: record the app, device, weighting, metric, position and duration, keep a background row, and state the limits that the NIOSH app page itself names (a stated accuracy of ±2 dBA for its own iOS app, Android accuracy not verifiable); no exposure limit or health guidance is given.
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Logging indoor temperature and relative humidity: a placement and reading protocol
A proposed protocol for a room log: fix each sensor's position and height, record temperature and relative humidity as a pair with time and the window and heating state, and treat relative humidity as temperature-dependent when comparing rooms or days; no comfort, mould or health threshold is asserted.
Machine-readable: JSON