tech99's latest activity
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tech99 replied to the thread How close are we to getting micro reactors?.Rolls Royce SMR are producing small, modular reactors, and are contracted to build the first new station at Wylfa, UK, and Temelin... -
tech99 replied to the thread A.I. - Human Job Replacement.The video focuses on imparting information to students. The primary issue for teaching is not this. It is the development of human... -
tech99 replied to the thread A.I. - Human Job Replacement.My experience was that Zoom was hated by the students, the teachers were not getting feedback from them and very little learning took place. -
tech99 replied to the thread A.I. - Human Job Replacement.I am concerned about using AI to replace teachers. Children seem to have too much exposure to screen time - we are running into... -
tech99 replied to the thread Artemis 2 launch - humans return to the Moon after 54 years.I remember on the last time a manned space craft went behind the Moon, the radio signal did not restore as soon as the crew could see... -
tech99 replied to the thread Do old CRT and O-scopes degrade to emit harmful X Rays?.X-rays are not emitted below 20kV accelerating voltage so far as I know, so it was only when colour TV started that it became an issue... -
tech99 posted a comment on the media item The Genius Device That Rocked Formula-1 Racing.I suppose the invention of high inertia without high mass is analogous to discovering high permeability cores. -
tech99 posted a comment on the media item The Genius Device That Rocked Formula-1 Racing.The device can add inertia to the suspension travel without adding very much actual mass. If the suspension is thought of in an... -
tech99 replied to the thread Undergrad Higher magnification calibration slide.I thought the graticule was placed in the eyepiece so is not subject to the full magnification? -
tech99 replied to the thread Undergrad What causes knots and stress when untwisting ropes?.Yes, I agree with #4. An ordinary rope often has three strands, which are the bunches of fibres, and which are twisted around each... -
tech99 replied to the thread Undergrad How many carriers for phased array?.If you pulse one carrier at both 5Hz and 8Hz you are, by doing this, causing a mixing process between the two pulse trains. In effect... -
tech99 replied to the thread High School An apparent contradiction between Fleming's rules.Yes. In the UK we are taught Fleming's Left Hand Rule for motor effect and Fleming's Right Hand Rule for Generator Effect. These rules... -
tech99 replied to the thread Undergrad Measured Spectrum of Stopped Wood Organ Pipe Shows ALL Overtones.I think the question was essentially why are even harmonics present with a stopped pipe. -
tech99 replied to the thread Undergrad Measured Spectrum of Stopped Wood Organ Pipe Shows ALL Overtones.These are my ideas on this question. A very interesting topic. The pipe is excited by a series of brief, unidirectional pulses which... -
tech99 replied to the thread Questions about a parallel plate capacitor apparatus for lab experiments.The energy stored might be sufficient to cause a risk to the heart. It is allowable to touch a Van de Graaff generator but not to add a...