What is the risk of retinal damage if a patient leaves an optometrist after having their eyes dilated and does not wear sunglasses? Conditions like snow blindness are damage to the cornea, but what is the risk of damage that can be done to the retina? [more inside]
My living room in my new apartment doesn't have windows, and right now it feels like a cave. I would appreciate suggestions for light fixtures/bulbs or other ways to light it so that it feels like it is lit with natural sunlight. [more inside]
What can I do to save a large indoor gardenia plant with browning, dry leaves? [more inside]
How long do I have to be exposed to 'bad UV' to be at risk of negative effects? [more inside]
I recently moved into a new apartment on short notice. One thing I didn't realize when kicking the tires was that there is no natural light in my bedroom during the morning. This tends to make waking up an unpleasant and lengthy event—it's dark, and often I just fall asleep again. I don't want this to happen, and I've noticed that when I sleep in a room with good morning light exposure I wake up earlier and happier. So: how can I replicate a rising sun in my room? Full spectrum light (like for SAD) hooked up to a dimmer hooked up to a timer? Clever arrangements of mirrors?
I am designing a house and using the wonderful suncalc.net/ I have been able to view the daily path of the sun throughout the year, for a given set of co-ordinates. I would however like to go one step further and model how different 3D house shapes would fare for sunlight throughout the year at a specific place on the surface of the earth. I am willing to pay for this software if necessary.
Potentially-nonexistent-product-filter: Is there such a thing as a light system that emulates dawn-to-dusk daylight? Something that brightens and dims relatively closely following actual sunlight? [more inside]
Why does my router need to be placed out of direct sunlight? [more inside]
I need a way to block sunlight (UVA/UVB) on the driver's side window of a car while I'm driving. Difficulty: I'm driving. [more inside]
How do I take a picture of the rainbow sparkle when sunlight hits a snowflake? [more inside]
Can you identify my office plants from the photos, and give me tips for caring for them? [more inside]
Crohn's disease, rash. WTF is it? You are not my dermatologist [more inside]
Can my very droopy and sad-looking Wollemi Pine be saved? He started out perky, but now he looks like Charlie Brown's Christmas tree. Or is this just what a 200-million-year-old gymnosperm looks like? [more inside]
A few commercially bottled beer questions for people who know beer: [more inside]
How can I direct or reflect sunlight into a shaded part of my garden? [more inside]
How do I best grow plants under artificial sunlight? What will I need? [more inside]
Is there a way to measure how much sunlight different parts of my yard get over the course of a day? [more inside]
Tips for making a windowless workspace a pleasant place to work long hours? [more inside]
We've been told for some time at work that we're going to be moved from a second floor, windowless area down to the first floor which is at street level and has floor to ceiling windows looking out at street level. This sounds great! However, I just saw the plans and it appears that the cubicles which we have the option to choose from all have cube-height (six foot?) walls between our chairs and the windows. Think back to Office Space. [more inside]
Where should I put my garden? [more inside]
When I'm battling an infection/virus for a few days, my body temperature climbs as the sun goes down. My village elders tell me this is normal. Why do fevers get worse after sundown, but subside in the morning?
Is it true that the skies in the Southern Hemisphere appear brighter and clearer than Northern Hemisphere skies? I have read this several times from various unscientific sources. If so, what is the reason?
What city in the world has the highest number of annual hours of sunshine between temperatures of 15C and 25C (60F and 80F)? (Coz that's where I want to live)
Where on my new/proposed property is there sunlight throughout the day? [more inside]
I have a pencil (maybe charcoal?) sketch of Pompeii my mom drew, about 50 years ago. It's gorgeous. It's been tucked away because I'm afraid of light damaging the picture. Are there any specialty picture frames/glass coverings I can use to display her artwork, while minimizing fading or light damage?
I love sitting in the backyard working on my laptop. The problem is its often not very readable. What is the best way to use a laptop outside? At the moment I am squinting a lot. I'm open to all practical suggestions including devices, positioning, shading etc. (I own a Thinkpad T42 if it's relevant)
Asking for the girlfriend (if that wasn't clear): My significant other is plagued by oral contraceptive -induced sunlight sensitivity. [more inside]
Overcast skies at twlight, looking westward. A bright flash of white light, followed by instant red. Sunset, in the blink of an eye! What is this phenomenon called?
Is there a way, possibly using Google maps or some other app, to determine the path of the sun over my property for the coming summer months? Specifically, I am trying to determine if a particular region near some oaks will get enough sunlight for a small vegetable garden.
How can I calculate the ambient (natural) light level for a particular location and time? [more inside]
How would I determine sunlight levels for the planets in the outer solar system? [more inside]
Does the American Pacific Northwest get less daytime in the winter than in the summer, and if so, why? [more inside]