On a rod, it forms a sine wave. So 50" (1.27m in non-dumbass units) divided by pi (π) or ~3.14 is about 16" of linear coverage on a curtain rod. So two together would almost cover a standard 36" window, and definitely cover a 24" window with 4" of overlap.
That would be for a basic sine wave. On the curtains the frequency of the wave would change when opened and closed. And the fabric can flatten at the top and bottom when pulled closed. A set of these curtains should cover a window from around 40-80", depending on how full you want them to be.
@hchavers Everything in context – Sunblockers are for eye shades or SPF-laden ointments; Whiteout is a blizzard next to Lake Erie outside Buffalo, NY. But I guess “blackout” is for when the news refuses to tell you when the UFO landed.
OTOH, the pictures on these curtains imply that there are still lots of gray areas in this commerce.
@hchavers@phendrick BTW when I was in Korea for work, in the 1990s, they had 4WD vehicles and “SUVs” which we didn’t really have yet in the US, including the Kia Sportage which was sold here years later (and even today I think). In Korea, all of them had “blackout lights” which were minimal lights intended only to shine down onto the pavement giving no light upward. It looked a bit funny to see regular vehicles on the highway with those, but we have similar lights on some US military vehicles. In Korea the idea was that in case of war (presumably with N Korea), all the 4WDs could be used quickly as military vehicles. I presume that rule dated from the Korean war in the 1950s, so was somewhat out-of-place in the 1990s. I can’t imagine “hiding” the city of Seoul… but yeah, it was a thing at one time. “Blackout” meant “no light that enemy planes can see.”
I couldn’t wait for this sale and bought some “blackout” curtains from Amazon about a year ago, on sale for about the price of these. Glad I did. If terroristic moths were to loot me of my curtains, I would certainly buy again. They made a hug difference in my sleeping patterns.
Of course, I cannot vouch for this particularly offering.
@phendrick sometimes I liked huge hugs. But not in the Covid era, thank you very much. I’ve been settling for remote hugs and in a way it’s the sentiment that counts. Plus, less creepy and sweaty and smelly…
@pmarin Huge hugs in the bedroom tend toward getting sweaty and smelly, but hopefully not especially creepy.
(Ahh, I’m doing much too much free-associating today. I need to get back to more productive endeavors…)
Are they also thermal insulated? It’s important to block the sun & the heat. I used blackout curtains before, but when I found thermal blackout curtains, it made considerable difference in the temperature of the room during the day.
not really too related, but gives me an excuse to tell the void that i bought a thermal blackout panel to hang in a doorless doorway (wtf? is there a better name for this lol) of our living room that’s right next to the window a/c, in hopes of keeping the living room cooler. (on the other side of the curtain is the kitchen which has no cooling, or heating for that matter.)
we thought it would help a little, but holy shit, i’m talking world of difference. i honestly don’t even understand how a $10 piece of fabric from target makes this much difference. including the $7 tension rod, best $17 bucks i’ve spent in awhile. it was 100 degrees yesterday and i was on the couch unbothered, and even put a little blanket over me at night while watching tv. (flashback to the previous heatwave and the a/c had been set at 65 for three days and i was sitting on the couch covered in ice packs unable to do anything because i was so miserable. a/c’s internal thermostat revealed it was still 87 degrees in our living room.) i also notice the a/c doesn’t spit condensation everywhere either. the only thing that’s not great is the pattern on the one we got isn’t perfectly straight but it’s not too noticeable.
@owenversteeg for the price, definitely worth checking out! not sure on its light blocking capabilities since it’s not in a window, but it sure helped with the heat. we did the drive up pickup too so i didn’t even have to hunt for it in the store which was nice.
What color is the side facing the window? I rent and it’s in my lease that any window treatments have to appear white from outside the building. I never realized how limiting it would be to find curtains online that indicate the color of the back.