# Recent Content by anorlunda

1. Post

### Change temperature within very small timeframe

A hot heat sink, followed by a cold heat sink. Maybe sauce pans for heat sinks.
Post by: anorlunda, Sep 20, 2017 at 7:53 AM in forum: Chemistry
2. Post

### Limiting output voltage of an electric fence energiser

Google 10 KV surge arrester. I found several starting at \$13.
Post by: anorlunda, Sep 17, 2017 at 6:29 PM in forum: Electrical Engineering
3. Post

### Studying Is it possible to understand quantum mechanics in student life?

Let me suggest that you search "susskind quantum" on YouTube. His 10 lecture course uses only moderate math, but he does it right, no analogies,...
Post by: anorlunda, Sep 16, 2017 at 12:03 PM in forum: Academic Guidance
4. Post

### B Is Newton's 3rd law sufficient to explain buoyancy force?

Post by: anorlunda, Sep 15, 2017 at 2:22 PM in forum: General Physics
5. Post

### B Is Newton's 3rd law sufficient to explain buoyancy force?

:welcome: Wikipedia has a good article on buoyancy forces. https://en.wikipedia.org/wiki/Buoyancy Read that first and then if you still have...
Post by: anorlunda, Sep 15, 2017 at 12:56 PM in forum: General Physics
6. Post

### I What Materials Absorb IR The Best?

That's better focus on better insulation, not something that seems better but isn't.
Post by: anorlunda, Sep 15, 2017 at 9:38 AM in forum: General Physics
7. Post

### I What Materials Absorb IR The Best?

You are asking for help on cheating. Shame on you. Leave the lens cap on the IR camera. That will absorb the IR.
Post by: anorlunda, Sep 15, 2017 at 9:32 AM in forum: General Physics
8. Post

### B Change in direction of velocity

Acceleration is change in velocity divided by elapsed time. How much elapsed time?
Post by: anorlunda, Sep 14, 2017 in forum: General Physics
9. Post

### Affordable hurricane-resistant housing, can we do it?

That's easier said than done. Hurricanes, tornadoes, floods, fires, earthquakes, volcanic activities, blizzards, ice storms, sea level rise,...
Post by: anorlunda, Sep 14, 2017 in forum: General Engineering