Resistance including temperature – tungsten
I am doing a paper on calculating temperatures of tungsten filament inside a halogen lamp. I have measured different voltage-current levels and calculated the resistance. Then, I have used formula...
View ArticleHot Chocolate- cooling itself down
If a hot cup of hot chocolate is just standing there, can it cool itself down by transferring the kinetic/thermal energy that the liquid has into the mug/cup?
View ArticleInfrared light and heat
I know that mid wave IR, long wave IR, and far IR are all infrared light that we feel as heat. Often, even when it is cold and windy, if I face the sun in a sunny spot it feels like it is 80 degrees F...
View ArticleHow to reduce the heat on a gas burner
I have a new gas cooktop and the lowest setting on the smallest burner still produces afast rolling boil rather that a very low simmer. How can I reduce the heat?
View ArticleHow to calculate max temperature craft needs to withstand near the Sun
The Solar Probe Plus fact-sheet states that the craft will approach to the distance of 9 solar radii to the surface of the Sun (Approx 6.26e6 km) and its heat shields must withstand 1644K of heat. I...
View ArticleWhat is the right temperature for deep-frying?
I want to know what is the right temperature for deep-frying, for: Schnitzels French-fries Crockets and Onions. I want to know the lowest temp for the right frying, because I want to keep the oil as...
View ArticleManaging nuclear waste [closed]
Suppose you are trying to dispose of used uranium fuel rods. Once they are cooled and contained in zirconium pods, how would one try and send those pods to the earths core? This is all hypothetical. I...
View ArticleHow to know the doneness for a tough cut of meat
You’re always hearing that a tougher cut of meat like a brisket or a shoulder be cooked low and slow to break down the tissue and be tender. I have also heard (by the experts) that a tough cut of meat...
View ArticleTemperature dependence of magnetic domains
Does the size of magnetic domains depend on temperature ? Not able to find any papers on this subject, maybe because there is no such dependence…
View ArticleCooking multiple dishes at once in the oven
What is the rule of thumb for adjusting temperature and cooking time when cooking multiple dishes in the oven at the same time? In particular, if the dishes have different required temperatures and/or...
View ArticleWindows vs OS X temperature, Windows runs hotter
I could see about 10 degrees celsius less when idle in OS X, compared to Windows 8.1, that’s ~49 °C compared to ~38 °C. I’ve seen that, according to Macs fan control, the fan is shut down in idle, but...
View ArticleTo which internal temperature should I cook beef for rare/medium/well done?
I am going to cook a beef roast: To which internal temperature should I cook it for rare/medium/well done?
View ArticleWhy do some materials shrink when their temperature increases?
In my vision it would seem quite logical that all materials expand when temperature rises. Because the particles get more energy and travel larger distances when moving. But apparently there are some...
View ArticleHow to tell when water reaches 100 degrees Fahrenheit without a candy...
I found a recipe for a gelatin desert I’d like to try. But there was one step I don’t feel prepared to tackle: In the meantime, in a small sauce pan heat ¼ cup of water to about 100 degrees. Add the...
View ArticleLarge scale structure of the universe
I have read of two seemingly straightforward explanations that give reasons for the inhomogeneity of the large-scale structure of the universe (i.e. why stars / galaxies formed where they did) One is...
View ArticleAdvice for cooking two pumpkin pies at once
Tonight my wife will attempt the feat of cooking two of her pumpkin pies at once. Given the firing schedule for one pie (the Libby’s recipe for one pie- 15 mins @ 425, reduce to 350 for 40-50 mins),...
View ArticleClik here to view.
how to simulate temperature PN-junction of LED in Solidworks
I am simulating one heat-sink for one LED Lamp, So i am using Solidworks for this simulating similar to this : and it works but i want to simulate temperature PN-junction of LED So have i must simulate...
View ArticleMax operating temperature for a DC-DC constant current boost converter?
I am using a GERI® Dc-dc 250w Constant Current Boost Step-up Module to convert 12V to 30-35V. It is mounted to a 100w tdp heat sink. Two questions. I know the maximum operating temperature for this...
View ArticleClik here to view.
Can I cook an egg by holding it in thermosphere?
It is known that in thermosphere, air temperature is rising sharply with increase of altitude. In upper atmosphere, temperatures can even reach 2000°C or higher: see 2. However, air there is extremely...
View ArticleIs climate change caused by humans? [closed]
Some people argue it is not because it is caused by solar cycles (sometimes the sun brights more than others thus increasing the Earth’s temperature) and that the energy that $CO_2$ traps isn’t enough...
View Article