Science Experiment How To Make A Sundial

At the same time the Egyptians invented the “shadow clock”, other cultures also developed a need to organize their time more efficiently. Amongst others, the Chinese, Greeks and the Romans developed another device for telling the time known as a “sundial”. Sundials do not necessarily work better than shadow clocks; it is just a slight variation to the shadow clock. Make your own “sundial” to tell the time in this science experiment:

WHAT YOU NEED:

“Protractor
“Stiff card
“Compass
“Thick cardboard
“Glue
“Scissors

HOW TO PROCEED:

1.On a stiff piece of cardboard, draw a right angled triangle as in the diagram above. The short sides of the triangle should be about 150mm long, whereas the long side will be about 200mm, depending on the longitudinal angle used for your town. Make sure that you also add the base, below the dotted line.
2.Cut out the triangle, and make a fold along the dotted line to form the base for the triangle to stand on.
3.Make a thick base for your sundial out of corrugated cardboard or wood of about 150x300mm in size. Draw a semi-circle on the base as shown in the diagram above.
4.Glue the folded part of the triangle firmly to the base and place the sundial on a flat surface outside so that the triangle points north / south.
5.Mark the position of the shadow that falls on the base every hour. Notice that the shadow travels the same distance along the semi-circle every hour. On a sunny day you will now be able to tell the time by looking at the position of the shadow on your sundial!

In the above science experiment we have built a time indicating device called a “sundial”. This works because of the fact that shadows change direction, depending upon the time of day. The position of the sun in relation to a specific location on earth changes throughout the day as the earth rotates around its own axis every 24 hours. A “sundial” like this one, uses a shadow’s position to tell the time. The position of a shadow on the semi-circle depends on the time of day, but it also depends on the season of the year. That’s because the sun’s position at a certain time of day is different in different seasons.

MORE FACTS:

The obvious problem with “sundials” and “shadow clocks” is that they don’t work during night time! The king of Egypt, was not satisfied having to check the position of the stars to know what the time is during the night, so one of his princes made him a water clock. A water clock works by taking a big bucket of water, fills it with water up to a specific line and then cut a small hole in the bottom of the bucket and marked off lines on the bucket after each hour had passed. The problem with a water clock is that water flows more slowly or quickly when the temperature changes. The same principle was used but the water was substituted with sand to make a sand clock. The inventor of the sand clock is unknown, but the sand clock or hourglass was commonly used in ancient times and is still used today.

eGov KE Srinagar – Inaugural – Bipul Pathak, CommissionerSecretary , Science & TechnologyInformat

tv.eletsonline.com

Please be the part of our Upcoming Event FIPS

Elets – A platform for disseminating creative ideas on ICT

Elets Technomedia is a technology media and research company that focuses on ICT in government, education, healthcare, agriculture and rural development sectors. Our mandate is to provide effective information on latest development in different ICT tools, techniques and their applications across our verticals through premier print publications, online portals and premier events, seminars, conferences and summits. Elets has created a name for itself as a technology media and research vendor of choice.

Strategies

To strengthen and facilitate knowledge sharing platforms engaging with partners across the globe through International conferences to provide cross-cultural grounding to stakeholders and participants To provide stakeholders with a platform to share models of best practice, knowledge and experience on a range of issues in the domain of ICT in Governance, Education, Health, security, Urban and Rural Development To mobilise the communities towards creating a digitally informed knowledge society based on shared understanding

Elets Focus Areas

Elets provides an unmatched versatility for working with multiple partners and consultants to mutually share knowledge. With a vision to provide effective information on latest development in different ICT tools, techniques and their applications across various verticals with focused reference to governance, education and health, we

a) bring niche monthly publications;

b) provide knowledge exchange fora and

c) conduct research projects, primarily through Events & Conferences.

Adhyatama (self- Spiritual Science) , Jyotish (astrology) And Ayurveda Complete Each Other

In this world, rules and siddhantaas,discipline, adhyatama, astrology and ayurveda etc are the pillars to make the human life happy. Any of these have not been designed to make life sorrowful. In this article, we try to throw some light on the topic that adhyatama, astrology and ayurveda complete each other. Elders,sages and our religious texts also indicate that no matter how difficult the times are but blessings from GOD can make it easy, no matter what physical pain you are in but Ayurveda can help you, and the biggest problems can be solved by astrological help.

The living being is composed of five elements and the beliefs in Sanatan Dharma call these five elements as DEVTA and hence we have Agni devta, Vaayu devta, Jal devta, Dharti maata, Aakash pita balance of these five elements gives us a healthy , prosperous and happy life.

When these five elements loose their balance then they result in mental and physical problems. To solve these problems astrological help; under ayurveda, the different vanaspati help in obtaining various tatvas or for decreasing of any tatva we get various medicinal plants and all these things we have by GODs grace and we have cure for all problems.

It is a very detailed subject and the details will be given in the coming editions and in the coming times Sarvagya muni Pandit Satyendra Bhardwajs written book will be with us in which it will be mentioned how astrology can help us know that at a particular time which planet is in the wrong position and due to this which tatva is less or more in the body and thus resulting in problems, also the book will give us knowledge relating to that tatva and which food elements to use less or more to get benefits.

It is well known that Surya and Mangal are agni tatva planets .Clove, javitri, jaiphal ,sonth etc are also agni tatva medicines. Sun God, Goddess Mahakaali, Lord Hanumaan, Planet Mars are agni tatva .Moon and Venus are jal tatva planets.Juicy foods are jal tatva medicines. Goddess Saraswati , Lord Brahma and Jal Devta are also jal tatva .Similarly all five elements of astrology are present in seven planets. Medicines are present in Ayurveda and deities in Adhyatama.

Needless to say that how deeply these things are related to human life . It is well known that during sorrow, astrology and ayurveda and adhyatama give us hope. These give relief to us at least at the mental level and this is proof enough of their effectiveness.

According to Indian culture, to lead a happy life there is no fourth option besides above three. All three are regulated by nature. When used in saatvik manner, these three give us healthy life , healthy society, healthy country and healthy world. Rajogun, Satogun, Tamogun are part of Astrology, Ayurveda and Adhyatam like Brahma, Vishnu and Mahesh.

Science Of Self-defense – Control The Distance And You Control The Fight

One of the biggest problems that students encounter in their attempts to master self-defense, is the use and control of distance. And yet, learning to control the distance between you and your attacker is probably THE most important skill that you could ever master.

This isn’t just something that those new to martial arts or the science of self-defense have trouble with. On the contrary, intermediate and advanced practitioners are guilty of ignoring this critically important element of combat.

While many would disagree with me, citing how adept they are at always being at the right place to deliver their kick or punch, they overlook the other side of the coin, so-to-speak. What do I mean? I mean this – they may be able to control their own distance to their opponent’s targets, but…how good are they at controlling their attacker’s ability to get at their own?

In an attack situation, if you’re really applying the principles and concepts of a solid self-defense science (as opposed to just throwing a bunch of stuff at the attacker – hoping for the best!), you MUST control his perceptions about what he has available to him. And one of the best ways for you to do this is to control the distance and space between yourself and your assailant.

Again, to most martial art students or those learning a self-defense program, distance is limited to the “style” or philosophy being taught. Some schools prescribe to the “too far away to be hit,” philosophy, while others suggest that you “get in there” and jam him up.

The reality of life is that, you just can’t predict some things, so you have to be flexible and able to adapt. But, before I go any further in this discussion, let’s take a look at two possible scenarios. Okay?

First… What if you’re a really good wrestler, grappler, judo guy, whatever? And what if you;re really good at getting in there and taking the fight to the opponent. And…

…what if you run into someone who’s really good at punching, kicking, or especially good at using their knees? What if you run into someone who just won’t let you get close enough to “get in?”

Or… What if you’re really good at punching and kicking, you know, keeping a guy in your sights and slamming him every time he gets close-enough. But…

…what if you get blind-sided by an assailant who comes at you from the side or the rear. What if you’re suddenly in a bearhug or being scooped up and driven into the ground?

This debate about “which style is better” has been raging for as long as human beings thought in a dualistic manner. In the science of self-defense, you have to understand that you need options to be most successful. And thinking in a limited, one-way-only fashion will get you killed.

The reality is that, you not only need to be good at both of these ranges, but three more as well.

If you’re surprised to find that there are as many as five different ranges in a self-defense situation or street fight – any fight, actually – you’re not alone.

To understand these ranges more fully though, you have to have more weapons then just fists, feet, shins, etc. You have to expand your realm of experience beyond the normal perspective of most people, and at least of most attackers that you might have to defend yourself against.

The 5 Ranges In The Science of Self-Defense

Mastering each type of distance allows you to control, not only your attacker’s ability to hit certain targets, but also to control his perceptions about:

What type of fighter you are
What you know
What you’re able to do to him
What his own options and strategy needs to be

You also control subtle, personal things that your attacker isn’t normally aware of – let alone in control of. Things like his emotional state, level of determination or anxiety, and his concern for his own safety and self-preservation.

The five ranges in the science of self-defense are:

1) Too Far – This one may seem obvious but so few practitioners, student and teach alike, take advantage of this range in a self-defense situation. Everyone understands what it means to be too far away, but few understand what you should be doing at that range to control the situation.

2) Long Range – This is the distance where reaching kicks are typically launched. We need the longer distance due to the length of our outstretched legs. This is also the range of what I call “lunging” punches, where you step forward with the rear leg to deliver the strike.

3) Mid-Range – About arms-length from the attacker, this range puts you at a distance where many of the long-range kicks usually associated with karate and tae-kwon-do no longer fit. Here, the typical attacks include lead-hand “jabs,” front snap kicks, and even some knee strikes from the rear leg, to name just a few.

4) Close-Range – Here, the distance has been closed to what we might also call “grappling” distance. Where single-hand lapel, sleeve, or wrist grabs might occur as a controlling factor at mid-range, close range tactics usually involve both combatants taking hold of each other in a conventional wresting scenario. But, be careful and make sure that you’re not overlooking the fact that close-range strikes like elbows, lifting knees and shins to the gut or groin, or even headbutts can be delivered at this distance.

And finally…

5) Very Close-Range – At this distance, there really appears to be no distance at all. The attacker and defender are wrapped around each other with no space to do much but apparently hold on and use what muscle you have to both control and restrain. But, if we can change our perspective, or at the very least get out of the sport competition mindset and remember that we’re trying to protect ourselves from damage – to defend ourselves and go home – then we can see that other tactics like biting, skin grabs, and very close-range strikes are possible.

Controlling the distance allows you to control the fight. And I don’t just mean controlling your opponent. I mean, “controlling the fight” – controlling what “type” of fight you’re in.

It’s important to understand that old warrior motto: “flexibility leads to longevity.” If you have the ability to adapt and change your own tactics, including the ranges that you feel comfortable in during a self-defense situation, you will be miles ahead of any attacker’s capabilities to keep up with you. You’ll also last longer too!

Glass Beakers In The Kitchen Adding Science To The Art Of Cooking

How many times have you been in the kitchen and run out of measuring cups to store your precisely prepared ingredients? We have. Glassware made specifically for kitchen use can be prohibitively expensive and many home chefs will settle for boring bowls and cups. Ever consider labware for your kitchen? Watch a couple episodes of Alton Brown’s hit Food Network show, “Good Eats,” and the rest is history. The fact is lab equipment isn’t entirely foreign to being used in the kitchen. Every wonder where the idea for the immersion blender came from?

Laboratory grade glassware makes the perfect supplement for your home cooking needs. Many of the properties that make laboratory lab equipment so great in the labware also valued in your kitchen. Characteristics such as a high melting point, resistance to strong acids, alkalis, and thermal shock make laboratory glass perfect for the kitchen.

Glass beakers can be used to mix and serve salad dressings and drinks. Ever had a test-tube shot? Make your guests the Guinea Pigs your next experiment. You may also put a cork in those test-tubes and use them to make a very cool spice rack. In fact, what couldn’t you use labware for you in your kitchen?

Erlenmeyer flasks can be used for many of the same uses but on a larger scale. These flasks are perfect for the home-brewed beer enthusiasts. They may also be used for storing leftover soups, pastas, and sauces. Never guess what’s in the leftover container again!

Speaking of sauces… want to try a new delicate sauce recipe, but don’t have the time to continuously stir it? A magnetic stirring hot plate can solve that problem. Simply drop a teflon coated stir bar (won’t add any unwanted flavors) into your sauce to be, and the magnetic hot plate will automatically stir it for you.

Beakers can easily replace measuring cups and drinking glasses. They also make a wonderful alternative serving dish for layered desserts.

One of the best features of using lab equipment in the kitchen is their ability to be used over and over and not retain any leftover flavors. Dishwasher safe and laboratory approved, labware makes a great alternative to traditional measuring, storing, stirring, and scooping containers.

Dare to be different and discover what scientists know you have been missing out on by using labware in your kitchen.