grant hutchison
Order of Kilopi

No, I asked you for a measurement of GCR dose in cis-lunar space which was simultaneous with the Chang'E-4 surface measurement, and made with similar...

Yes, you've just given me a link to the paper I quoted, and quoted the same information I provided. Grant Hutchison

They were opposite. Apollo 11:Chang'E-4: (My bold throughout). Hence my inability to get excited about this. Grant Hutchison

From the original report:So a total absorbed dose of 1.3mrad/hr. About double the Apollo estimate of 0.6mrad/hr. Do you have a simultaneous...

At 1 mrad/hr, 195 hours mission duration would produce 0.195 rad, compared to the recorded average of 0.18 rad for Apollo 11. But sixty hours of...

My old Datsun 120Y allowed me to get out of the car and lock the door behind me with the keys still in the ignition and the engine running. I found...

I'm having difficulty seeing the point. Given the difference in shielding, instrumentation and solar cycle, the difference between measured...

A lady has just became a news item in the UK, albeit the "light relief" section, for having had a copy of one of her child's paintings tattooed on...

Ah, good. My current copy is an antique photocopy dating from 1974, with a first page that has largely faded into illegibility. And those old...

And the NASA figures I used in my calculation, of 0.6mrad/hr at the Moon compare to 1mrad/hr in cis-lunar space, folds in the effect of local...

Original Lancet article here. It's an opinion piece, setting out the strands of evidence that support an "airborne" (that is, aerosol rather than...

An Etch-A-Sketch, obvs! (My nephew assures me that it's not only the worst Christmas present I ever gave him, but the single worst gift he has ever...

That turns out not to be the case. I did a back-of-the-envelope calculation in another Apollo/radiation thread a few years ago, using data available...

Here's a graph. (Original context.) We're using less paper for printing, but more for packaging. The problem is, of course, that the increase in...

Most of my favourites are intensely sad. The Boon Companion refers to that particular pile of movies as my "feel-bad collection". Yes, I enjoyed...

By the way, if anyone wants to read the remarkably detailed analysis of radiation exposure experienced by the Apollo XI astronauts, try to get hold...

An article from 2012, entitled Radiation exposure in the moon environment.So what Chang'E-4 has done is produce more complete data for a radiation...

But does anyone still believe Apollo 11 landed in Cornwall? Sorry. On topic: It was generally known that the Apollo astronauts would be exposed to...

Now, that conjures up an interesting mental image in British English. One that's surprisingly difficult to dismiss once envisioned. Grant Hutchison

No, it was a science journalist named Ann Gibbons. To quote Merriman & Cameron: Grant Hutchison

You need three things--the angular separation of two lensed images, the light-travel time delay between those two lensed images, and the velocity...

I don't suppose you have an actual thermometer in your fridge? "Half power" doesn't really help. In a sub-zero environment, it's not unusual for one...

The personal risk calculation for people over 30 in the UK is currently a no-brainer--you're more likely to come to harm from Covid than from an...

Yes, I understand what people liked about it, and I've no objection at all to supernatural / science fantasy narratives. (In fact, I like few things...

Yeah. I think we watched an episode and a half, back-to-back. The engine, the polar bear, and the point at which I said, "Time for this guy to be...

Copy it from an earlier post by someone else in the thread. That way you'll keep the typeface consistent, too. Grant Hutchison

'Oumuamua. Last time I looked, it was behaving just in the way it would if it were outgassing. So absolutely not swerving around the sky in...

Who knows. Are they bigger or smaller than a correct fit? Have you checked the label and measured the waistband of the old and new jeans? ...

I don't know how he validated his data--my earlier link goes to a version of the tool used in the so-called Great British Psychopath Survey, but it...