David › Comments

"It was the mail I was having a problem with. No matter which computer I tried (two different Apples and my iPhone), it wouldn't accept the password I created. Then, about 48 hours later, it magically started working. I'm not sure if the change needed to replicate through the Google environment or what." - David

"I tell you what, at $139 and faster page refresh rates, the new Kindle just moved way up my want list." - David

"I tell you what, at $139 and faster page refresh rates, the new Kindle just moved way up my want list." - David

"I tell you what, at $139 and faster page refresh rates, the new Kindle just moved way up my want list." - David

"I've never really understood the eyestrain claim either. I *see* it promulgated (even Gruber has said it). My understanding, though, is that eyestrain was a side effect of CRT screens, owing to their refresh rates. LCDs technically have refresh rates, too, but the refresh is done on a pixel-by-pixel basis, not by scan lines, as on a CRT. I'm not even really sure *how* LCDs would cause eyestrain, what the method would be. People get eyestrain in extremely bright light (think a really sunny day or snow glare), but an LCD hardly seems bright enough to do that." - David

"I've never really understood the eyestrain claim either. I *see* it promulgated (even Gruber has said it). My understanding, though, is that eyestrain was a side effect of CRT screens, owing to their refresh rates. LCDs technically have refresh rates, too, but the refresh is done on a pixel-by-pixel basis, not by scan lines, as on a CRT. I'm not even really sure *how* LCDs would cause eyestrain, what the method would be. People get eyestrain in extremely bright light (think a really sunny day or snow glare), but an LCD hardly seems bright enough to do that." - David

"I've never really understood the eyestrain claim either. I *see* it promulgated (even Gruber has said it). My understanding, though, is that eyestrain was a side effect of CRT screens, owing to their refresh rates. LCDs technically have refresh rates, too, but the refresh is done on a pixel-by-pixel basis, not by scan lines, as on a CRT. I'm not even really sure *how* LCDs would cause eyestrain, what the method would be. People get eyestrain in extremely bright light (think a really sunny day or snow glare), but an LCD hardly seems bright enough to do that." - David

Annotated link http://www.diigo.com/bookmar...? - David

Annotated link http://www.diigo.com/bookmar...? - David

"And, of course, the whole discussion surrounding dBm is even a little misleading. Absolute reception is important, of course, but the phone's ability is also (maybe even equally) a function of it's performance as it relates to SNR and SIR (noise and interference)." - David

"And, of course, the whole discussion surrounding dBm is even a little misleading. Absolute reception is important, of course, but the phone's ability is also (maybe even equally) a function of it's performance as it relates to SNR and SIR (noise and interference)." - David

"And, of course, the whole discussion surrounding dBm is even a little misleading. Absolute reception is important, of course, but the phone's ability is also (maybe even equally) a function of it's performance as it relates to SNR and SIR (noise and interference)." - David

"Funnily, there's an app for that! (Or at least an extension.) http://safariextensions.tumblr..." - David

"Funnily, there's an app for that! (Or at least an extension.) http://safariextensions.tumblr..." - David

"Funnily, there's an app for that! (Or at least an extension.) http://safariextensions.tumblr.com/post......" - David

Why does Jake Godby make such weird ice cream? - David

Why does Jake Godby make such weird ice cream? - David

The ability of an optical system to resolve fine detail requires minute spacing of optical detectors.  In the retina, there detectors are the photoreceptors.  Objects we look at at projected through the cornea and lens and imaged on the back of the eye on a plane that ideally lines up with the retinal photoreceptors. Theoretically the limit of retinal resolution, say the ability to distinguish patterns of alternating black and white lines is approximately 120pixels/degree in an optimal, healthy eye with no optical abnormalities.  Again, this corresponds to one minute of arc or 0.000291 radians (π/(60*180)).  If one assumes that the nominal focal length of the eye is approximately 16mm, an optimal distance from the eye for viewing detail might be around 12 inches away from the eye which is reasonable to assume for someone viewing detail on their iPhone. - David

The ability of an optical system to resolve fine detail requires minute spacing of optical detectors.  In the retina, there detectors are the photoreceptors.  Objects we look at at projected through the cornea and lens and imaged on the back of the eye on a plane that ideally lines up with the retinal photoreceptors. Theoretically the limit of retinal resolution, say the ability to distinguish patterns of alternating black and white lines is approximately 120pixels/degree in an optimal, healthy eye with no optical abnormalities.  Again, this corresponds to one minute of arc or 0.000291 radians (π/(60*180)).  If one assumes that the nominal focal length of the eye is approximately 16mm, an optimal distance from the eye for viewing detail might be around 12 inches away from the eye which is reasonable to assume for someone viewing detail on their iPhone. - David

Annotated link http://www.diigo.com/bookmar... - David

Annotated link http://www.diigo.com/bookmar... - David

Annotated link http://www.diigo.com/bookmar... - David

Annotated link http://www.diigo.com/bookmar... - David

Annotated link http://www.diigo.com/bookmar... - David

Annotated link http://www.diigo.com/bookmar... - David

Annotated link http://www.diigo.com/bookmar... - David

Annotated link http://www.diigo.com/bookmar... - David

Annotated link http://www.diigo.com/bookmar... - David

Annotated link http://www.diigo.com/bookmar... - David

Annotated link http://www.diigo.com/bookmar... - David