Technology

42 recent checks in this topic

Latest checks · Page 2

An SSD circuit board with memory chips beside an opened hard disk drive showing its platter and read/write arm.

Technology

Do SSDs store data on spinning disks?

No. SSDs store data in memory chips. Spinning magnetic disks and moving read/write heads are features of mechanical hard disk drives.

Verdict

False

Verification confidenceHigh

A smartphone playing a local audio file beside a portable Bluetooth speaker.

Technology

Does Bluetooth need an internet connection to transmit audio?

No. Bluetooth can transmit audio directly between compatible devices without internet. Accessing the audio content is a separate requirement.

Verdict

False

Verification confidenceHigh

A home router and smartphone with separate labels for 5 GHz Wi-Fi and 5G mobile service.

Technology

Is 5 GHz Wi-Fi the same as 5G mobile service?

No. 5 GHz names a Wi-Fi frequency band; 5G names a generation of cellular technology. A home connection can use both, but they describe different links.

Verdict

False

Verification confidenceHigh

A ceiling fan above a living room seating area, with a thermometer on a nearby wall.

Technology

Does a ceiling fan lower a room's air temperature on its own?

No. A ceiling fan circulates air and can make occupants feel cooler, but it does not lower the room's air temperature on its own.

Verdict

False

Verification confidenceHigh

A smartphone displaying active airplane mode and Wi-Fi indicators.

Technology

Can you use Wi-Fi while airplane mode is on?

Yes. Supported iPhones and Android phones can use Wi-Fi while airplane mode stays on. You may need to turn Wi-Fi back on; during a flight, follow the airline's instructions.

Verdict

True

Verification confidenceHigh

Matching detail crops of a photograph before and after repeated lossy JPEG compression.

Technology

Can repeatedly re-saving a JPEG reduce its image quality?

Yes. Recompressing a JPEG can discard more image data and introduce artifacts. The effect depends on the compression settings and encoder.

Verdict

True

Verification confidenceHigh

A laptop displaying a file download beside a home internet router.

Technology

Does 100 Mbps mean downloading 100 megabytes per second?

No. Mbps means megabits per second. A rate of 100 Mbps equals 12.5 megabytes per second before overhead and other limits reduce the actual file download rate.

Verdict

False

Verification confidenceHigh

A small magnet attached to a labelled ferritic stainless steel sample.

Technology

Is all stainless steel non-magnetic?

No. Several stainless steel families are strongly attracted to magnets. Other grades respond weakly, and manufacturing can change their magnetic behaviour.

Verdict

False

Verification confidenceHigh